https://dermagicexpress.blogspot.com/2018/10/are-mosquitoes-involved-in-transmission.html?m=1

ARE THE MOSQUITOES INVOLVED IN THE TRANSMISSION OF LYME DISEASE?

November, 2018

Dr. José Lapenta Dermatologist
Dr. José M. Lapenta MD
 
EDITORIAL ENGLISH
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Hello friends of the network, DERMAGIC EXPRESS with a super hot topic:
ARE THE MOSQUITOES INVOLVED IN THE TRANSMISSION OF LYME  DISEASE?
A few years after the discovery of the Borrelia Burgorferi in 1981 by Willy Burgdorfer, some scientists began to suspect that mosquitoes and other insects could be involved in the spread of Lyme borreliosis; and specifically in 1985-1987 studies began to appear on this subject, some controversial, others more convincing of the fact that mosquitoes that feed on blood from animals contaminated with Borrelia, could be vectors of the disease and contribute to the epidemic that attacks the whole world today by this spirochete.
Ticks are always spoken of as the only and great vector, but today I bring you some references that will make you think that there is something “hidden” and perhaps not revealed about Lyme Borreliosis: mosquitoes as transmitting vectors.
Not to make it long I’m going to name the most outstanding aspects of some studies and I’ll leave the references of the facts:
  • Historically in the year 1961 Robert J.A. I first proved the experimental transmission of Borrelia, in this case Borrelia anserina, (discovered by Saknarof in the year 1891) by the hematophagous insect Aedes aegypti in geese of the Caucasus, since then it has been isolated from the blood of infected geese, turkeys, ducks, fowls, partridges, crows and sparrows from all parts of Africa, Australia, Austria, Bulgaria, Brazil, Egypt, East Indies, Germany, Greece, Hungary, India, the U.S.S.R., Rumania and Turkey.
  • In 1985 Dolby et al. published in France a work of 4 Chronic Erythema Migrans (ECM) cases, where only 1 could be checked the sting by ticks, and raise the possibility that the transmission could have been by mosquitoes and flies (horseflies,  tabanid).
  • In 1987 Magnareli et al.  conducted a study in Connecticut, United States collecting mosquitoes, horse flies and deer flies, in total 18 species, which were tested for Borrelia Burgdorferi finding a percentage of positivity that varied between 2.9 and 14.3% for blood-sucking insects. They also placed in cages insects with hamsters not contaminated with Borrelia; 11 species of females contaminated with Borrelia Burgdorferi fed on the blood of the hamsters. The spirochete was not found in the hamsters, but one of them presented positive titers of anti-Borrelia antibodies.
From these years they continued publishing works in relation to this subject where it is demonstrated that in a low percentage the Borrelia Burgdorferi can be transmitted by mosquitoes, horse flies, deer flies, and others.
It is important to note that most of the studies were conducted in Europe, being perhaps the most relevant those made in the Czech Republic, where among them, in one study 5% of the mosquitoes studied were shown contaminated with spirochetes and one of them corresponded to the strain (BR-84) identified as Borrelia Afzelii.
 
Another detail to highlight is that the CDC does not mention these blood-sucking insects as a possible transmitter of Lyme borreliosis, which, although being low in the percentage shown in the studies, could be a factor in the spread of this disease by the world.
Here I leave the bibliographical references that prove these facts and in the attach one of the species of mosquitoes in which the Borrelia Burgdorferi was found.
“Under the sun there is nothing hidden, and sooner or later the evidence appears that shows that what you tried to hide, became the evidence that became a truth”
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BIBLIOGRPHICAL REFERENCES / REFERENCIAS BIBLOGRAFICAS
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For more:  

https://madisonarealymesupportgroup.com/2016/07/23/german-study-finds-borrelia-in-mosquitos/

https://madisonarealymesupportgroup.com/2018/10/04/deer-fly-lyme-carrying-ectoparasite-on-the-move/