Global challenges in the context of a public health threat.

Medical topics with questions, information and discussion related to Lyme disease and other tick-borne diseases.
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Global challenges in the context of a public health threat.

Post by NellyP » Sun 1 Jun 2014 17:45 ... .00074/pdf (full text at link)

Lyme and associated tick-borne diseases: global challenges in the context of a public health threat. Running title: Global challenges of Lyme disease

Christian Perronne1* Professor of Infectious Diseases Paris-France

Lyme disease, caused by Borrelia burgdorferi and transmitted by ticks, was initially considered a recent, rare and regional occurrence. We now have evidence that very similar bacteria infected humans in Europe during the ice age (1). Evidence-based data are scarce therefore many aspects of the disease remain controversial (2,3,4), but in 2013 the Centers for Disease Control and Prevention (CDC) revised their annual estimates from 30,000 cases to 300,000 cases in the USA alone. Having dramatically increased their numbers, the CDC are now calling Lyme disease “a tremendous public health problem in the United States” (5).
The lack of a gold standard for diagnosis makes producing accurate statistics difficult. Some pathogenic strains belonging to the B. burgdorferi sensu lato complex have a worldwide distribution, yet they are rarely considered or tested for (6,7,8,9,10,11,12,13). Borrelia miyamotoi, for instance, phylogenetically close to relapsing fever borreliae, is now recognized as a cause of Lyme-like disease and relapsing fever in Asia, Europe and North America. It usually does not cross react with B. burgdorferi tests (12,13). A novel isolate of Borrelia has been isolated by PCR in a post-treatment serum from a patient with neurologic Lyme disease (13).

These recent historical, geographical and microbial data should prompt the medical community to realize that cases of persisting post tick-bite syndromes are probably due to multiple pathogens and that these occult infections will require a new approach if not an actual paradigm shift.

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