Archive for the ‘Ticks’ Category

Seroprevalence of Bb, Bm, & Powassan in Residents Bitten by Ixodes Ticks

https://wwwnc.cdc.gov/eid/article/25/4/18-0202_article?fbclid=IwAR3Ul329rua5cLKPHHxRVaGsmiH22QIWqjngZyYPO5MJgucoBHdTjjkHFLM

Volume 25, Number 4—April 2019

Seroprevalence of Borrelia burgdorferi, B. miyamotoi, and Powassan Virus in Residents Bitten by Ixodes Ticks, Maine, USA

Robert P. Smith, Susan P. EliasComments to Author , Catherine E. Cavanaugh, Charles B. Lubelczyk, Eleanor H. Lacombe, Janna Brancato, Hester Doyle, Peter W. Rand, Gregory D. Ebel, and Peter J. Krause
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Reports of Lyme disease in Maine, USA, have increased from a few cases in the late 1980s to 1,848 cases in 2017 (1), coinciding with range expansion of Ixodes scapularis ticks over the past 3 decades (2). The Maine Center for Disease Control reported the first 2 cases of hard-tick relapsing fever caused by Borrelia miyamotoi during 2016 and an additional 6 cases during 2017 (1). Hard-tick relapsing fever might be present as a nonspecific febrile illness (3,4). Han et al. (5) found a B. miyamotoi infection prevalence of 3.7% in adult I. scapularis ticks in Maine, ≈10-fold less than that for B. burgdorferi infection (50%, range 32%–65%) (6).

Powassan virus (POWV) encephalitis can be a devastating human infection and has infected 10 residents of Maine during 2000–2017. There are 2 variants of POWV with distinct enzootic cycles and tick vectors. Lineage 1 is transmitted by I. cookei ticks and lineage 2, sometimes referred to as deer tick virus, is transmitted by I. scapularis ticks (7). Both lineages are present in Maine (7), but lineage 1 has a lesser risk for transmission because human bites by I. cookei ticks are infrequent (8). One fatal Maine case was demonstrated to be caused by lineage 2 POWV (7). Although POWV infection prevalence in Maine I. scapularis ticks is low (0.7%–1.8%) (9), frequent exposure to I. scapularis bites (8) and rapidity of POWV transmission (i.e., POWV might be transmitted to vertebrates after only 15 min from onset of the tick bite) (10) raise concern.

To clarify frequency of exposure to B. burgdoferi, B. miyamotoi, and POWV pathogens, our objective was to determine the seroprevalence of each of these pathogens in residents of Maine, USA, who had been bitten by I. scapularis or I. cookei ticks. We also anticipated that a serosurvey might provide evidence of asymptomatic POWV infection or self-limited illness in a few persons, as reported elsewhere (11,12).

The Study

The Vector-Borne Disease Laboratory of the Maine Medical Center Research provided a free, statewide tick identification service during 1989–2013 to monitor exposure to I. scapularis ticks during range expansion of this invasive vector of human and animal disease. Persons submitted ticks that they had removed from themselves, family members, and pets. As of 2014, 33,332 ticks representing 14 species were identified in Maine; I. scapularis ticks were predominant.

During 2014 (2), we used our tick identification service database to identify persons who had removed >1 attached I. scapularis or I. cookei tick(s) from any person in the household in the previous 5 years (2009–2013). We invited these persons to participate in a serosurvey to assess past exposure to B. burgdorferi, B. miyamotoi and POWV. At the clinics, accompanying family members who self-reported as being tick-bitten were also invited to participate. The study was approved by Maine Medical Center Institutional Review Board (Protocol #4222). Participants provided informed consent (assent for minors) and submitted 30 mL of blood. Blood was centrifuged at 3,500 rpm for 15 min. Serum aliquots were stored at −20°C and then shipped to testing laboratories.

Serologic testing for antibodies to B. miyamotoi was conducted at the laboratory of one of the authors (P.J.K.). An ELISA and confirmatory Western blot assay were used to detect serum reactivity to B. miyamotoi GlpQ protein (13). For the ELISA, serum samples were diluted 1:320 and a signal >3 SD above the mean of 3 B. miyamotoi–negative serum controls was considered positive for B. miyamotoi antibody. Serum samples were considered B. miyamotoi seropositive if ELISA IgG and Western blot IgG tests yielded positive results.

Serologic evidence of exposure to B. burgdorferi was detected by the standard 2-step ELISA and Western blot assay in the Lyme Disease Serology Laboratory at Yale New Haven Hospital by one of the authors (H.D.). A reactive serum was defined as reaction to a dilution >1:100. All borderline or reactive serum were further characterized by Western blot immunoassay. Specimens were considered positive for B. burgdorferi exposure if the IgG immunoblot contained >5 of the 10 most common B. burgdorferi–associated bands (14).

Serologic testing for POWV was conducted by one of the authors (G.D.E.) by using a plaque-reduction neutralization test (PRNT) and a POWV–West Nile virus (WNV) chimeric virus (POWV–premembrane–envelope [prME]/WNV) assay as described (15). The specificity of the assay was determined by cross-neutralization studies, which demonstrated that antiserum raised against POWV efficiently neutralized chimeric POWV–prME/WNV but not WNV and that antiserum raised against WNV do not neutralize POWV–prME/WNV (15). Use of the chimeric POWV–prME/WNV assay virus enabled PRNT testing to be conducted on African green monkey kidney (Vero) cells according to standard procedures by using a 90% neutralization cutoff to be considered positive (15).

Of 230 enrolled persons, 190 were in our tick identification program database, and 40 were family members (Table 1). Among the 190 persons, 1 tick bite was from an I. cookei nymph, 13% of bites were from I. scapularis nymphs, and 86% of bites were from I. scapularis adult females. Engorgement of ticks ranged from slight (43%) to moderate (38%) to high (18%). Among the study population, 32 (13.9%) were seropositive for B. burgdorferi, 6 (2.6%) were seropositive for B. miyamotoi, and 2 (0.9%) were seropositive for both pathogens (Table 2). The serum of 1 person (0.4%) neutralized POWV at a titer of 1:20 and WNV at a titer of 1:10. We designated this serum as flavivirus positive. This person reported a history of neurologic illness for >1 year and a tick bite within the study year.

Conclusions

Among residents of southern Maine with a history of I. scapularis tick bites, the percentage who were seropositive for B. burgdorferi was 6 times greater than that for B. miyamotoi (13.7% vs. 2.1%) and 30 times greater than the percentage of deer ticks infected with POWV (0.4%). Because our study population consisted of persons bitten by I. scapularis ticks (with engorgement ranging from slight to high), we expected seroprevalence to be greater than that for the general population. The B. burgdorferi seroprevalence of 13.7% in our study population was ≈1.5 times higher than the seroprevalence of 9.4% reported by Krause et al. (13) in healthy residents of southern New England. In contrast, the B. miyamotoi seroprevalence of 2.1% was comparable to the seroprevalence of 3.9% reported by Krause at al. (13).

Of 1,854 cases of infection with Borrelia spp. reported in Maine in 2017, a total of 1,848 were attributed to Lyme disease and only 6 (0.3%) were attributed to B. miyamotoi (1). On the basis of a seroprevalence of ≈2% in this study and that B. miyamotoi might be transmitted by all tick stages, we believe that this disease is underdiagnosed in Maine (5). Our population was identified by history of tick exposure, rather than by symptoms. Our results therefore represent the relative frequency of exposure to these different agents rather than risk for illness.

Although the sensitivity and specificity of the 2-tier antibody assay for B. burgdorferi is better validated than those of the B. miyamotoi and POWV assays, the sensitivity and specificity of these assays are good (13–15). Nonetheless, our findings might represent overestimates or underestimates of actual exposure to these agents because of false-positive or false-negative results. These data provide evidence that humans are exposed to B. burgdorferi, B. miyamotoi, and POWV in Maine and help define the prevalence of human infection caused by each of these tickborne pathogens.

References

  1. Maine Center for Disease Control. Reportable infectious diseases in Maine, 2017 summary; 2018. [cited 2018 Sep 18]. https://www.maine.gov/dhhs/mecdc/infectious-disease/epi/publications/#annualreports
  2. Rand  PW, Lacombe  EH, Dearborn  R, Cahill  B, Elias  S, Lubelczyk  CB, et al. Passive surveillance in Maine, an area emergent for tick-borne diseases. J Med Entomol. 2007;44:1118–29. DOIPubMed
  3. Platonov  AE, Karan  LS, Kolyasnikova  NM, Makhneva  NA, Toporkova  MG, Maleev  VV, et al. Humans infected with relapsing fever spirochete Borrelia miyamotoi, Russia. Emerg Infect Dis. 2011;17:1816–23. DOIPubMed
  4. Krause  PJ, Fish  D, Narasimhan  S, Barbour  AG. Borrelia miyamotoi infection in nature and in humans. Clin Microbiol Infect. 2015;21:631–9. DOIPubMed
  5. Han  S, Lubelczyk  C, Hickling  GJ, Tsao  JI. Transovarial transmission rate and filial infection prevalence of Borrelia miyamotoi from Ixodes scapularis collected from hunter-harvested white-tailed deer. Presented at: International Symposium on Tick-Borne Pathogens and Disease; Vienna, Austria; September 24–26, 2017.
  6. Smith  RP, Elias  SP, Borelli  TJ, Missaghi  B, York  BJ, Kessler  RA, et al. Human babesiosis, 1995–2011, Maine, USA. Emerg Infect Dis. 2014;20:1727–30. DOIPubMed
  7. Cavanaugh  CE, Muscat  PL, Telford  SR III, Goethert  H, Pendlebury  W, Elias  SP, et al. Fatal deer tick virus infection in Maine. Clin Infect Dis. 2017;65:1043–6. DOIPubMed
  8. Smith  RP Jr, Lacombe  EH, Rand  PW, Dearborn  R. Diversity of tick species biting humans in an emerging area for Lyme disease. Am J Public Health. 1992;82:66–9. DOIPubMed
  9. Robich  RM, Lubelczyk  C, Welch  M, Henderson  E, Smith  RP Jr. Detection of Powassan virus (lineage II) from Ixodes scapularis collected from four counties in Maine. Poster LB-5175. Presented at: 66th Annual Meeting of the American Society of Tropical Medicine and Hygiene; Baltimore, MD, USA; November 5–9, 2017.
  10. Ebel  GD, Kramer  LD. Short report: duration of tick attachment required for transmission of powassan virus by deer ticks. Am J Trop Med Hyg. 2004;71:268–71. DOIPubMed
  11. Frost  HM, Schotthoefer  AM, Thomm  AM, Dupuis  AP II, Kehl  SC, Kramer  LD, et al. Serologic evidence of Powassan virus infection in patients with suspected Lyme disease. Emerg Infect Dis. 2017;23:1384–8. DOIPubMed
  12. El Khoury  MY, Camargo  JF, White  JL, Backenson  BP, Dupuis  AP II, Escuyer  KL, et al. Potential role of deer tick virus in Powassan encephalitis cases in Lyme disease-endemic areas of New York, U.S.A. Emerg Infect Dis. 2013;19:1926–33. DOIPubMed
  13. Krause  PJ, Narasimhan  S, Wormser  GP, Barbour  AG, Platonov  AE, Brancato  J, et al.; Tick Borne Diseases Group. Borrelia miyamotoi sensu lato seroreactivity and seroprevalence in the northeastern United States. Emerg Infect Dis. 2014;20:1183–90. DOIPubMed
  14. Centers for Disease Control and Prevention (CDC). Recommendations for test performance and interpretation from the second national conference on serologic diagnosis of Lyme disease.MMWR Morb Mortal Wkly Rep. 1995;44:590–1.PubMed
  15. Nofchissey  RA, Deardorff  ER, Blevins  TM, Anishchenko  M, Bosco-Lauth  A, Berl  E, et al. Seroprevalence of Powassan virus in New England deer, 1979-2010. Am J Trop Med Hyg. 2013;88:1159–62. DOIPubMed

 

Veterinarian Warns Ticks Active All Year – Not Just Warmer Months

https://www.localdvm.com/news/i-270/veterinarian-warns-pet-owners-of-ticks-that-can-cause-lyme-disease/1818492884

Dr. Susan Keane says ticks are alive all year round, not just in warmer months

THURMONT, Md. – A Thurmont veterinarian is warning pet-owners of what to look for to make sure your four-legged friend doesn’t become a victim of harmful ticks.

Dr. Susan Keane at the Catoctin Veterinary Clinic says ticks that can spread Lyme disease are alive all year round, not just during the warmer months.

She says your dogs, and even cats can catch the harmful bug while playing in the backyard or through a walk in the woods.

Dr. Keane advises that regular checks through their fur, especially the legs, can help with prevention, but here are some other symptoms to look for.

“Joint pain, fever, lethargy, meaning they’re laying around, not eating, anorexia. Any dog going outside, even in a suburban yard there’s some risk of a field mouse dropping a tick or the white-tail deer that we have in Maryland,” Dr. Keane explained.

In the last 100 tests done in January at the clinic, Dr. Keane says, eight percent tested positive for Lyme disease.

But she adds that treatment is available.

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For More:  https://madisonarealymesupportgroup.com/2016/01/20/polar-vorticks/

https://madisonarealymesupportgroup.com/2019/03/06/mild-winter-days-watch-out-for-ticks/

https://madisonarealymesupportgroup.com/2019/02/19/canadian-tick-expert-think-winter-means-no-more-ticks-think-again/

https://madisonarealymesupportgroup.com/2018/12/05/deer-ticks-are-surviving-winter-becoming-a-year-round-problem/

https://madisonarealymesupportgroup.com/2018/08/13/study-shows-lyme-not-propelled-by-climate-change/

Mild Winter Days? Watch Out for Ticks

Winter thaws bring out the ticks. Take precautions when heading outdoors on warm winter days to avoid tick bites. Wearing light-colored clothing and tucking pantlegs into socks can help. Credit: Pavla Zakova | Dreamstime.com

We asked disease ecologist Rick Ostfeld if we need to worry about ticks during the winter. His response is below. (TL; DR = yes)

Blacklegged ticks, which transmit the agents of Lyme disease, babesiosis, and anaplasmosis, disappear in winter, right? Well, not entirely. Although human encounters with these ticks are less likely in winter, there are plenty of ticks out in the environment lurking in a state of (almost) suspended animation.

Larval ticks that hatched the prior summer but failed to find an animal host can become dormant and remain on the forest floor in a quiescent state. The same is true of nymphal ticks, which are normally most active in spring and early summer. These two stages are unlikely to activate until day-length and temperature both increase dramatically. Adult stage ticks, in contrast, most actively seek hosts in the late fall.

The females that were able to engorge on host blood last fall are overwintering in soil pores or under leaf litter, while slowly converting host blood into eggs that they will lay next spring or summer. Some of the adults that did not find a host have died of starvation or other causes, but the unfed survivors will activate any winter or spring day with above-freezing temperatures. In the southern United States, these ticks can be active all year, but even in the northeastern and upper Midwestern regions, ticks can bite during any warmish spell in January, February, and beyond.

As part of The Tick Project, we invite participating households to mail us ticks found embedded in or crawling on people or pets, and we typically receive quite a few even in the coldest months. The riskiest seasons for diseases transmitted by blacklegged ticks are spring and summer, but risk never goes away entirely. And, our 25-years of data from Dutchess County, NY show that, as the climate warms, the ticks come out earlier in the year, advancing the dates of greatest risk.

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For More:  https://madisonarealymesupportgroup.com/2016/01/20/polar-vorticks/   TICK GUY, TOM MATHER, SHOWS HOW TICKS SURVIVE IN 3 DEGREES OVERNIGHT UNDER SNOW COVER.

And regarding all the clamor of “climate change,” independent Canadian tick researcher John Scott has proven it has absolutely nothing to do with tick proliferation and therefore the spread of Lyme/MSIDS:  https://madisonarealymesupportgroup.com/2018/11/07/ticks-on-the-move-due-to-migrating-birds-and-photoperiod-not-climate-change/

https://madisonarealymesupportgroup.com/2018/08/13/study-shows-lyme-not-propelled-by-climate-change/  Warm winters are lethal to I. scapularis (black-legged) ticks.  In fact, overwinter survival dropped to 33% when the snow melted.

So…..when people push the idea that warmer winters somehow make ticks more abundant you can explain with science on your side that –

Warmer winters actually kill ticks

 

 

Alumnus Works to Protect People From West Nile Virus, Lyme Disease

http://www.etownian.com/features/alumnus-works-to-protect-people-from-west-nile-virus-lyme-disease/

Alumnus works to protect people from West Nile Virus, Lyme disease

APRILLE MOHN FEBRUARY 23, 2019

Photo from Wikimedia Commons

Feb. 18, Elizabethtown College alumnus Jon Bachman, ‘17, returned to Elizabethtown College to speak to current students about his career as an aquatic biologist with the Pennsylvania Department of Environmental Protection (PA DEP).

Bachman is part of a team researching and working to increase awareness of arboviruses. Arboviruses are viruses that are transmitted by mosquitoes, ticks or other arthropods. Bachman and his colleagues work to protect people from tick and mosquito-borne pathogens, most prominently West Nile Virus (WNV), and more recently, Lyme disease.

The DEP is studying WNV and the mosquitoes that carry it, which according to Vector Disease Control International, are primarily Culex pipiens, Culex tarsalis, and Culex quinquefasciatus.

Bachman and his team look at mosquito habitat so larvae can be suppressed and killed. They also set traps so when a female mosquito lays eggs in their trap they are able to collect the samples. They then smash the eggs and conduct polymerase chain reaction (PCR) on the DNA in them. PCR is a process that can make many copies of specific DNA strands. By replicating the DNA they are able to see if the virus is carried by the eggs they collected.

Based on where large traces of the West Nile Virus is found the team determines where they’re going to spray for adult mosquitoes in order to prevent the spread of the virus.

This past year has had the most WNV positive mosquitoes. There were 7,500 positive samples, which was much higher than previous years. The second highest positives found in a year was in 2012 when around 6,000 positive samples were found.

Some important information about the disease Bachman shared was that WNV is not spread between people—birds are the reservoir species for the virus, meaning that the mosquitoes must first get it from birds before they can transmit it to any humans.

Another distinction is that the mosquitoes which often carry West Nile Virus are not the large groups of mosquitoes people encounter. Those are typically the inland floodwater species of mosquito, or Aedes vexans.

Floodwater mosquito eggs often hatch all at once because the adult female mosquito lays eggs that dry out and don’t hatch until they get wet. On years with large amounts of flooding, such as this year, all the eggs get wet and all hatch at same time.

There are 62 species of Mosquitoes in Pennsylvania, but the vast majority do not carry West Nile Virus.

“If you’re being swarmed with mosquitoes they are not the ones carrying the disease,” Bachman said. “If you’re getting swarmed you don’t have to worry about getting the virus. It’s the one mosquito you don’t feel—that’s how you get the virus.”

This year, Bachman’s team has begun to do research on Ixodes scapularis, more commonly known as the deer tick, because of the Lyme disease they carry. Pennsylvania is the worst state for Lyme disease almost, if not every, year. For this reason, the DEP’s research is being funded by the Center for Disease Control (CDC) through the Department of Health.

Bachman’s team is trying to find 50 adult deer ticks in each county in Pennsylvania to determine the rate of Lyme disease for each region of the state.

According to Bachman, it takes a lot of work to catch 50 ticks.They have to look at three different sites and so they try to pick sites they know people will be at.

Bachman said he has the most luck along the edges of soccer fields with woodlines.

Each search is different, as well. Bachman spent six days in Fulton County, PA and was unable to catch a single tick, and yet in the next county over, Bedford County, he was able to catch over 100 ticks in half an hour.
Bachman said he has a “very, very unique job. It’s more of a public health job.”

To determine the best ways to control West Nile Virus and Lyme disease, he and his peers need to understand the habitats and life cycles of the organisms that spread the illnesses.

Bachman was an environmental science major with a minor in political science. While his career is much more focussed on ideas from environmental science Bachman found his minor helpful to learn and understand environmental law and regulations.

Moreover, his political science minor taught Bachman more about public speaking, which is important as part of his career is to work with representatives of different countries who come to him for advice regarding mosquitoes and ticks.

While at Etown, Bachman was involved with the SEEDS Ecology Club. He was the club’s treasurer his senior year, which was the first year that the College had a chapter of the nationwide program.

Bachman also has a U.S. Army background as he was a member of the Army from 2005 to 2012. He first worked as an Infantry man and later he worked with hazardous materials, or hazmat.

This work in the Army with hazmat led Bachman to the job he held prior to his position with the DEP, which was a job as the hazmat supervisor at a Harley Davidson in York, PA.

One piece of advice Bachman had for students in regards to finding jobs after college is to study the jobs they are applying for closely. “Look into every detail of a job before you go to an interview,” Bachman said.

Bachman recommends students learn about as many fields as they can, and make themselves well rounded in preparation for finding a career.

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**Comment**

Please notice the alarming statement of where Bachman finds the most ticks:

Bachman said he has the most luck along the edges of soccer fields with woodlines.

Please educate your family, friends, neighbors, and school systems.  Wisconsin children should all be wearing permethrin treated shoes and socks at the very least as they are at risk.  For more:  https://madisonarealymesupportgroup.com/2018/05/27/study-conforms-permethrin-causes-ticks-to-drop-off-clothing/

Also, I’d like to see Wisconsin go back to ditch burning:  https://madisonarealymesupportgroup.com/2018/04/03/fire-good-news-for-tick-reduction/

For a similar topic in Wisconsin, see:  https://madisonarealymesupportgroup.com/2018/03/13/wed-nite-the-lab-talk-on-mosquitoes-ticks-disease/

Wisconsin has cases of West Nile, La Crosse Virus, & Jamestown Canyon Virus.
Wisconsin is 4th in the nation for Lyme disease.

The CDC says the cases are hugely underestimated – more like 30,000 cases per year in WI.  WI is a hotspot for newly emerging TBI – Anaplasma, Ehrlichia muris, borrelia miyamotoi (relapsing fever), Babesia divergens (in Michigan but Dr. Paskowitz feels it’s probably here too). Anaplasma seeing 400-600 cases a year in WI.  Again, much underreporting.

 

 

Should Lyme Patients’ RICO Lawsuit Include Yale?

https://on-lyme.org/en/sufferers/lyme-stories/item/277-should-the-lyme-patients-rico-lawsuit-include-yale

Should the Lyme Patients’ RICO lawsuit include Yale?

Written by

Should the Lyme Patients’ RICO lawsuit include Yale?

Recently, a group of Lyme disease patients in the United States filed a lawsuit against several major health insurance companies and a group of Lyme disease specialists seeking treble damages for RICO Act (Racketeer Influenced and Corrupt Organizations Act) and Sherman Act antitrust violations. Four months earlier, Dr. Sin Hang Lee also initiated a legal action against the CDC for anti-competitive campaign to stifle the use and availability of his DNA-based direct test to diagnose Lyme disease. More recently, court materials surfaced which show credible reasons to believe that the role of Yale University in suppressing development and use of direct detection methods in the diagnosis of Lyme disease at the early stage of infection for patient care should also be scrutinized by the media and the lawyers of the RICO suit.

“The medical profession has been transformed into a “healthcare industry”. In this world of free market economy, the healthcare providers in the pain management business may arguably have the rights to create public need for their services, just like Apple creating demand for its iPhone.” Dr. Lee

[Disclaimer: The following text does not necessarily reflect my personal opinions and views or those of the On Lyme Foundation. However, it does faithfully present my questions and Dr. Lee’s answers, informed by his five decades of outstanding professional achievements.]

Dr. Sin Hang Lee has – at the age of 85 – a unique perspective on the developments of the policies and politics of Lyme Disease. When Dr. Allen Steere, then a first-year fellow in rheumatology at Yale University, named the mysterious outbreak of Borreliose in Connecticut ‘juvenile Lyme arthritis’ in 1975, Lee was already an associate professor of pathology at Yale. An exclusive interview.

Q. Can you introduce yourself and tell how you got involved in Lyme disease?


Dr. Lee: I graduated in 1956 from Wuhan Medical College in China, an old medical school originally established by the Germans in Shanghai. Then I became a microbiologist and pathologist while teaching in different universities in China and Hong Kong.

After a residency-fellowship training at Cornell Medical School-New York Hospital and Memorial Hospital for Cancer in New York City, I was certified by the American Board of Pathology and obtained the F.R.C.P. (C) degree by examination in 1966. After that I was on the faculty of McGill University – then Yale University – from 1968-2004. I was practicing pathology in the affiliated teaching hospitals and doing research on the side, including DNA sequencing at the later stage.

In 2004, I was employed as a pathologist in Connecticut at Milford Hospital where I began to develop routine molecular diagnostic methods using the PCR and DNA sequencing technologies to test patient samples to increase the accuracy of DNA-based tests.

Researchers like myself could not develop or use PCR technologies without paying heavy licensing fees to Roche until the PCR patent owned by Hoffmann La Roche expired in 2006. Therefore, my research work in this field officially began in 2006.

As a pathologist reading Papanicolaou smears for cervical cancer prevention, HPV detection and genotyping by DNA sequencing was my first priority among all the tests I needed to develop. The then chairman of the department of pathology of Milford Hospital and I published the first paper titled “Routine human papillomavirus genotyping by DNA sequencing in community hospital laboratories.” in June 2007.

Commercial test kits for sexually transmitted infections were developed based on clinical trials conducted in the “red-light” districts worldwide often using sex workers as the test subjects. When these test kits are used in populations with low disease prevalence, the ‘false-positive’ test rates may become unacceptably high. Therefore, we added Chlamydia trachomatis and Neisseria gonorrhoeae to the test list because the middle-class women in Milford needed an accurate ‘no-false positive’ test for these sexually transmitted infections. We use nested PCR routinely to increase the sensitivity and Sanger sequencing to maintain the specificity on all positive test results.

As a pathologist, accurate gynecology DNA tests are my major interest.  My laboratory currently has CLIA-approved test methods for HPV, Chlamydia trachomatis, Neisseria gonorrhoeae as well as Ashkenazi Jewish BRCA1 and BRCA2 founder mutations screen all on one Pap smear sample; these methods are implementable in community hospitals.

Lyme surfacing

I was first appointed as an associate professor of pathology at Yale University in 1971. I have witnessed how Lyme arthritis was first described and reported in the world literature, and how patients have been diagnosed and treated in southern Connecticut in the past 40 years.

Furthermore, since Milford Hospital was serving a population in southern Connecticut with a high rate of Lyme disease, the hospital administration and the medical staff – including the former chairman of the department of pathology in 2008 – saw a need to expand the nested PCR/DNA sequencing technologies to include Lyme disease. This was done to test patient blood samples for reliable diagnosis of Lyme disease at the early stage of infection for timely appropriate treatment.

The staff of the department of pathology and the doctors of the emergency room (ER) of Milford Hospital started a research project to test the blood samples of the patients who presented to the ER with possible Lyme disease in 2008.

The technical paper was published in April 2010 and the clinical paper in November 2010. It was the first direct blood test with DNA sequencing accuracy and a new DNA test that was useful for patient care. This development was widely reported in the news media.

Q. What have you personally witnessed about the controversies on laboratory tests for the diagnosis of Lyme disease? 

Dr. Lee: Lyme borreliosis is a systemic bacterial infectious disease. According to the established principle in medical practice, all infectious diseases should be diagnosed by culture or detection of the nucleic acid of the causative agents in patient samples. If Lyme disease were first described after 2006 when the world-wide PCR patent expired, I am sure we would not have any diagnostic controversies today.

Historically, Lyme arthritis was first described in the mid 1970’s by a group of rheumatologists at Yale medical school. It appears their business is pain management and not detection of infectious etiologies. When a spiral-form bacterium, now known as Borrelia burgdorferi, was found to be the causative agent, the only way to diagnose the infection in the early 1980’s was by measuring the antibodies against the bacteria in convalescent serum samples of the infected patients.

This is because the borrelia is difficult to culture in artificial media. Nucleic acid-based testing technologies, such as DNA sequencing and PCR were not available then.

PCR patented

When the Nobel Prize for discovering the PCR technology was awarded to Kary Mullis in 1993, the PCR patent was already purchased by Hoffmann La Roche from Cetus. The world-wide PCR patent rights did not expire until 2006. Before 2006, no one could develop any PCR diagnostics without paying Roche a heavy fee. Roche representatives told me the upfront, plus fees for each distinct PCR, was $250,000.

From the 1970s until 2006, heavy investments of money were made in the patented antibody-based technologies for diagnostic tests and in developing vaccines related to Lyme disease; these investments also helped to sponsor careers.

However, diagnostic antibody titers are not measurable in Lyme disease patients until 4-6 weeks after infection. By then, the borrelial spirochetes have already invaded deep tissues, and may not be eradicated as easily as in the early spirochetemic stage of the infection.

Early diagnosis

Early diagnosis and timely treatment may cure most Lyme disease patients and these early interventions would reduce the need for pain management and immunosuppressive therapies. For this reason, we at Milford Hospital developed the first nested PCR/DNA sequencing-based test to diagnose Lyme disease infections before the antibodies are measurable. 

The test was approved by the Connecticut State Department of Public Health under CLIA in 2009 for patient care. But when I tried to publish our clinical data and to spread the DNA-based test technology, I found there is a national concerted resistance to even consider any direct DNA test approach for Lyme Disease. 

Q. Can you specify the kinds of resistance you have encountered? 

Dr. Lee: Except for the first technical paper, all my manuscripts based on studies of Lyme patient materials were rejected by mainstream American medical journals, including the American Journal of Clinical Pathology, the Journal of Clinical Microbiology and the Clinical Chemistry.

The reasons for rejection alleged ‘lack of readership interest at the editorial screening stage’, or a low priority score. This was quite a ‘coincidental’ message to come from all these journals and it meant the manuscripts were rejected by editorial censorship and had to be published in foreign journals.

Although I had never met him in person, I knew Dr. Allen Steere was a pioneer in Lyme disease starting in Connecticut. Therefore, after my first technical paper on Lyme disease was accepted for publication in 2009, I sent the accepted manuscript to Dr. Steere at the Massachusetts General Hospital and informed him that there is an emerging reliable DNA method for diagnosis of early Lyme infection.

To my surprise, Steere wrote back in an email that he had no interest in reading the manuscript, because he was working on the C6 Lyme antibody test.

Diagnostics Conference 2014

On November 8, 2014, there was a national meeting entitled “Lyme Borreliosis and Tick Borne Illnesses: Diagnostics, Emerging Pathogens and Avenues for New Research” held in Massachusetts General Hospital (MGH). The organizers of the meeting initially asked me if I would consider speaking on my experience of using nested PCR/Sanger sequencing for the diagnosis of Lyme borreliosis, in particular Borrelia miyamotoi in blood samples.

After I warned the initial organizer, a fellow pathologist, that he might need to check with his group at MGH first before sending me an official invitation because I knew Dr. Steere was in charge of approving the speakers’ list in the name of continued medical education. I did not want the organizer of the meeting to make a wrong political move at MGH for himself.

As predicted, the invitation was aborted. Instead, I was advised to present a few Powerpoint slides at the Round Table Discussion and to distribute a Handout to the audience at the Round Table Discussion. However, in the end I was not allowed to present any Powerpoint slides and only allowed to distribute the Handout at the social event after the scientific meeting and after the Round Table Discussion. 

In the same year, without any explanation the CDC negated a previously agreed project titled “An open label, multi-site evaluation to assess the accuracy of current diagnostic laboratory testing methods in comparison to nested PCR and DNA sequencing for the detection of Lyme disease and related borreliosis”. This unfounded negation by the CDC of this planned project is the basis of my complaint and pending lawsuit against the CDC.

Based on my personal experience and that of an increasing number of reputable scientists and medical professionals, there appears to be an orchestrated censorship campaign against free flow of scientific information on Lyme disease research, in particular against development of direct detection tests for the diagnosis of early infections.   

Q. On the internet, I found some people attacking you because you were fired by Milford Hospital in 2010 and you had filed a lawsuit against the Hospital. Then there was a Businesswire press release in August 2013, announcing resumption of your DNA sequencing-based testing for early Lyme disease by you at Milford Hospital. Can you comment on that?

Dr. Lee: Yes. The press release is titled “Milford Hospital Pathologist to Resume DNA Sequencing – Based Testing for Early Lyme Disease”. It was merely issued to settle a lawsuit. Milford Hospital has stopped offering direct DNA testing for Lyme disease since the end of 2010 after the Yale medical group took over the management.

Q. Can you confirm that you filed a lawsuit against Milford Hospital after the Hospital terminated your appointment allegedly for cause in December 2010? 

Dr. Lee: Yes. But this lawsuit was settled in Court and the termination order was rescinded. My lawyer told me that I may not talk about the litigation, except to say that the lawsuit has been resolved.

Q. I have obtained a copy of the formal complaint your lawyer filed on your behalf with the Superior Court in Connecticut. In this document, you state that Yale had you fired because their serology-based Lyme diagnostic tests could not compete with your nested PCR/DNA sequencing test to diagnose Lyme disease at early stage of infection. As I understand your complaint, a Yale medical group doctor became the new chairperson at Milford Hospital and then told the human resources director to fire you.  Can you confirm if I have read the document correctly? 

Dr. Lee: Yes. Your summary is correct. It is common knowledge that the Yale medical group has focused on serology-based tests in order to diagnose Lyme disease at convalescent stage of the infection and I want to diagnose Lyme disease at the early stage of infection before Lyme antibodies become measurable.

These are two different approaches to diagnosing Lyme disease, from the rheumatologists’ point of view or from a pathologist’s point of view. This is a healthy scientific dispute that has nothing to do with the litigation.

Q. In the pending lawsuit against the CDC, you claim that certain CDC officers engaged in an anti-competitive campaign to stifle development of direct DNA testing for Lyme disease. Did you consider filing the same complaint against the Yale medical group? 

Dr. Lee: No. In my view, the medical profession has been transformed into a “healthcare industry”. In this world of free market economy, the healthcare providers in the pain management business may arguably have the rights to create public need for their services, just like Apple creating demand for its iPhone.

I cannot challenge a private group for conducting their normal business, but I can bring litigation against a competitor for anti-competitive activity and tortious interference with my business expectancies or on other grounds. 

However, the CDC is different from the private sector, because the CDC employees are government officials and public servants. Their salaries are paid by tax money and their job is to protect the public health and well-being and this includes any pain and suffering caused by unnecessarily delayed diagnosis and treatment of disease.

As U.S. federal government employees, the CDC employees believe they enjoy a protective shroud against liability.  However, there are those who have made personal financial gains -in addition to their full salaries and benefits-through the relationships with the industry they forged when securing patents. These public servants have also been active in the reviewing, judging, preventing and stifling of the products, devices or methods set forth by their competitors against public interest.  

In the case of maintaining a dysfunctional Lyme disease policy, these public servants who knowingly work against public interest for a personal agenda and personal gain should be held accountable.  In contrast, Yale employees can do whatever they want to advance their employer’s business interest… as long as it is lawful.

Prescribing pain killers and immunosuppressants for patients with post-treatment Lyme disease syndrome (PTLDS) is a major business for the rheumatologists in Lyme disease-endemic areas. Delaying diagnosis of Lyme disease infection until the patients are in convalescence is an effective way to maintain a high number of customers with PTLDS for the pain management industry, a practice considered to be acceptable for more than 30 years.

Q. What do you think about the value of serology-based tests for Lyme disease diagnosis? What do you consider to be the right approach to diagnose Lyme disease?

Dr. Lee: Lyme disease is, in reality, primarily chronic Lyme disease, because all acute Lyme infections are not being diagnosed and timely treated in most endemic states. Unless the patient presents with a classic bull’s eye skin lesion to the treating physician in the acute phase of infection, the possibility will not even be considered.

The problem of Lyme disease will probably disappear like that of rheumatic fever and rheumatic heart disease when an accurate direct detection test is used to detect all acute infections at the spirochetemic stage and treated properly like for group A strep throat infections in eliminating rheumatic diseases.

Now we have realized that clinical Lyme borreliosis can be caused by many species and strains of borreliae, including some species from the heterogenous relapsing fever group, notably Borrelia miyamotoi.

Just as we cannot use a Widal test to diagnose all Salmonella bacteremia cases, it is not possible to use one serology test kit to diagnose all borrelial infections. All antibody tests can generate false positive results, because antigen/antibody cross reactions are well known phenomena among different bacterial species.

The only accurate non-cultural method for the detection of a suspected bacteremia beyond a reasonable doubt is to perform Sanger sequencing of a signature segment of the genomic DNA isolated from the bacteria in the patient’s blood sample. Laboratory diagnosis of bacteremia caused by difficult-to-culture microorganisms is technically challenging. To this day, “there is not a readily available, effective direct-detection method for Treponema pallidum“ in blood samples.

To answer your question, I would say that the right approach to diagnose Lyme disease is to perform a highly sensitive nested PCR with a pair of comprehensive borrelial general primers followed by Sanger sequencing to validate the PCR amplicon.

Q. What is your motivation to sue the CDC now? 

Dr. Lee: My motivation is to bring the facts to the public and demonstrate how the CDC’ is violating their own principle for diagnosis of bacterial infectious diseases. The Agency has allowed some officers of the CDC to intentionally suppress development and discourage the use of scientifically established direct DNA tests for reliable diagnosis of Lyme disease infections.

By winning this lawsuit, I would receive $57 million and these monies can be used to establish a global system for accurate direct DNA tests to diagnose Lyme disease at the early stage of infection and for diagnosis of the chronic Lyme disease patients still presenting with spirochetemia. 

Based on three decades of CDC history and current Lyme policy, there is no indication the current CDC bureaucracy would willingly fund such a project. We hope members of Congress who are truly looking out for their constituents will support an investigation into the CDC and bring about the necessary changes for the benefit of tax payers and consumers.

In order to perpetuate the dogma created before the era of DNA sequencing, government agencies and the mainstream healthcare industry, including those in the academic centers, have no interest in developing direct testing methods. Their modus operandi is to maintain the status quo of a dysfunctional system, while paying lip serviceto the need for more research on better testing.

I must emphasize that my lawsuit is only against a few managers at the CDC. Over the years, I have known some very great and ethical CDC scientists. I have visited their labs and they have taught me a lot of molecular biology.

In fact, one senior scientist from the CDC came to Milford to help me design the molecular diagnostic laboratory according to the CDC standard. Another senior CDC scientist went out his way to get me a sample of Ebola virus RNA for me to develop a field reverse transcriptase PCR/sequencing method – which I presented at an international meeting on Ebola research held in the Pasteur Institute in Paris in 2015.

Q. What are your biggest concerns surrounding Lyme disease and public health care?

Dr. Lee: Lyme borreliosis is an emerging infectious disease transmitted by tick bites and is caused by numerous strains of Borrelia burgdorferi species and relapsing fever borreliae. The best way to prevent Lyme borreliosis is to avoid tick bites.

However, ticks are going to be around with us for a long time. I just pulled out an engorged deer tick heavily infected with Borrelia burgdorferi from the skin of my left arm on this past Thanksgiving Day, the first tick bite in my life. About 30% of the ticks, all Ixodes scapularis, in my backyard are positive for borreliae with a Borrelia burgdorferi to Borrelia miyamotoi ratio being ~10/1.

Since we cannot prevent tick bites and borrelial infections altogether, we must try to prevent or to stop the invasion of the deep tissues by the borrelia after infection, namely to prevent chronic Lyme disease. That means timely appropriate antibiotic treatment after a reliable diagnosis at the early spirochetemic stage of infection. That means widely spread use of direct detection tests for borrelia in blood samples in endemic areas in the local hospital laboratories. Sending blood samples across the country for the diagnosis of bacteremia is not an established practice for good patient care.

To answer your question, I think my biggest concerns are how to convince the healthcare industry and public health authorities that Lyme borreliosis is a potentially serious infectious disease and the diagnosis cannot be based on serology tests for timely appropriate patient management.

Then, we need to convince the hospitals at the Lyme endemic areas to handle Lyme disease patients like other cases of bacteremia as they occur. The workup for the diagnosis of bacteremia is traditionally carried out in the local hospital laboratory, not in an out-of-State commercial laboratory.

It is not easy to change the status quo established in the past 40 years. But it is doable if there is a strong public demand.

Dr. Sin Hang Lee

Interviewer / author: Huib Kraaijeveld

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For more on the deliberate suppression of microscopy for testing:  https://madisonarealymesupportgroup.com/2019/02/22/why-mainstream-lyme-msids-research-remains-in-the-dark-ages/

For more on the unholy alliance between Universities and research as well as industry-sponsored doctors:  https://madisonarealymesupportgroup.com/2017/01/28/sit-down-science/

https://madisonarealymesupportgroup.com/2017/01/02/fake-science/

https://madisonarealymesupportgroup.com/2019/02/11/industry-sponsored-doctors-new-study-shows-depth-of-commercial-influence/

https://madisonarealymesupportgroup.com/2018/08/24/financial-kickbacks-for-vaccinations-abusive-illegal-fraudulent/