_http://www.ncbi.nlm.nih.gov/pubmed/21395425_
(http://www.ncbi.nlm.nih.gov/pubmed/21395425)
Vector Borne Zoonotic Dis. 2011 Mar 11. [Epub ahead of print]
Prevalence of Three Zoonotic Babesia Species in Ixodes ricinus (Linné,
1758) Nymphs in a Suburban Forest in Switzerland.
Gigandet L, Stauffer E, Douet V, Rais O, Moret J, Gern L.
Institute of Biology, Laboratory of Eco-Epidemiology of Parasites,
University of Neuchâtel , Neuchâtel, Switzerland .
Abstract
Abstract The tick Ixodes ricinus (Linné, 1758) is known as the vector of
various Babesia spp. pathogenic for humans. In Switzerland, three of
them, Babesia divergens, Babesia venatorum (also known as Babesia EU1),
and Babesia microti, have been reported in I. ricinus ticks from various
areas. The aim here was to determine how frequently these species infect
I. ricinus nymphs in a suburban forest and to determine their prevalence
over 3 years along a pathway delimited in four different sections.
Babesia spp. was detected and identified in 44/2568 (1.7%) I. ricinus
nymphs using Reverse Line Blot. B. venatorum was infecting 1.1%
(27/2568) of nymphs, B. divergens 0.2% (4/2568), and B. microti 0.7%
(13/1908). Tick infection rates by these three Babesia species between
years were not different except for B. microti, which was significantly
less frequent in ticks in 2008 than in 2006 and 2007 according to a test
using trusted intervals of percentages. B. microti was displaying the
greater difference of prevalence among sampling sections, ranging from
1.6% in section 1 to 0% in section 4.
The presence of these three Babesia species that are of medical
relevance in a suburban forest where I. ricinus tick density is high
requires attention from physicians, particularly for patients presenting
unspecific symptoms and for patients who are immunocompromised, and who
have history of contact with tick biotopes.
PMID: 21395425 [PubMed - as supplied by publisher]
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