Mark P. Nelder,corresponding author Curtis B. Russell, Nina Jain Sheehan, Beate Sander, Stephen Moore, Ye Li, Steven Johnson, Samir N. Patel, and Doug Sider

I condensed information from the above link.



The blacklegged tick Ixodes scapularis transmits Borrelia burgdorferi (sensu stricto) in eastern North America; however, the agent of Lyme disease is not the sole pathogen harbored by the blacklegged tick. The blacklegged tick is expanding its range into areas of southern Canada such as Ontario, an area where exposure to blacklegged tick bites and tick-borne pathogens is increasing. We performed a systematic review to evaluate the public health risks posed by expanding blacklegged tick populations and their associated pathogens.


Researchers searched Ovid MEDLINE, Embase, BIOSIS, Scopus and Environment Complete databases for the years 2000 through 2015 using specific eligibility criteria such as field-collected backlegged ticks and studies that did NOT focus solely on B. burgdorferi (Bb) and performed quality assessments on eligible studies.  


Seventy-eight studies were chosen.  The ticks in the studies harbored 91 distinct taxa, 16 of which are tick-transmitted human pathogens including Anaplasma, Babesia, Bartonella, Borrelia, Ehrlichia, Rickettsia, Theileria and Flavivirus.


Our review is the first systematic assessment of the literature on the human pathogens associated with the blacklegged tick. As Lyme disease awareness continues to increase, it is an opportune time to document the full spectrum of human pathogens transmittable by blacklegged ticks.

If you go to the link at the top of page, Table One in the study has an informative table that shows the various states the studies were derived from as well as the human infections they found.  For Wisconsin the following were found:

*Arboviral infection (encephalitis, meningitis)



*Lyme Disease


*Rocky Mountain Spotted Fever

**Bartonella is NOT reportable, which we need to do something about.  Frankly, it is as nasty if not nastier than borrelia, and just as hard to get rid of.  Also, other borrelia species are also NOT reportable.  

***Also, just because it wasn’t found in this systemic review doesn’t mean it doesn’t exist.