A 4-Yr Survey of the Range of Ticks and Tick-Borne Pathogens in the Lehigh Valley Region of Eastern Pennsylvania.

Autor:	Edwards MJ; Biology Department, Muhlenberg College, Allentown, PA., Russell JC; Mathematics and Computer Science Department, Muhlenberg College, Allentown, PA., Davidson EN; Biology Department, Muhlenberg College, Allentown, PA., Yanushefski TJ; Biology Department, Muhlenberg College, Allentown, PA., Fleischman BL; Biology Department, Muhlenberg College, Allentown, PA., Heist RO; Biology Department, Muhlenberg College, Allentown, PA., Leep-Lazar JG; Biology Department, Muhlenberg College, Allentown, PA., Stuppi SL; Biology Department, Muhlenberg College, Allentown, PA., Esposito RA; Biology Department, Muhlenberg College, Allentown, PA., Suppan LM; Suppan LLC, Northampton, PA.
Jazyk:	angličtina
Zdroj:	Journal of medical entomology [J Med Entomol] 2019 Jun 27; Vol. 56 (4), pp. 1122-1134.
DOI:	10.1093/jme/tjz043
Abstrakt:	Questing ticks were surveyed by dragging in forested habitats within the Lehigh Valley region of eastern Pennsylvania for four consecutive summers (2015-2018). A high level of inter-annual variation was found in the density of blacklegged tick nymphs, Ixodes scapularis Say, with a high density of host-seeking nymphs (DON) in summer 2015 and 2017 and a relatively low DON in summer 2016 and 2018. Very few American dog ticks (Dermacentor variabilis Say) and Ixodes cookei Packard were collected. Lone star ticks (Amblyomma americanum L.) and longhorned ticks (Haemaphysalis longicornis Neumann) were not represented among the 6,398 ticks collected. For tick-borne pathogen surveillance, DNA samples from 1,721 I. scapularis nymphs were prepared from specimens collected in summers 2015-2017 and screened using qPCR, high resolution melting analysis, and DNA sequencing when necessary. The overall 3-yr nymphal infection prevalence of Borrelia burgdorferi was 24.8%, Borrelia miyamotoi was 0.3%, Anaplasma phagocytophilum variant-ha was 0.8%, and Babesia microti was 2.8%. Prevalence of coinfection with B. burgdorferi and B. microti as well as B. burgdorferi and A. phagocytophilum variant-ha were significantly higher than would be expected by independent infection. B. burgdorferi nymphal infection prevalence is similar to what other studies have found in the Hudson Valley region of New York, but levels of B. microti and A. phagocytophilum variant-ha nymphal infection prevalence are relatively lower. This study reinforces the urgent need for continued tick and pathogen surveillance in the Lehigh Valley region. (© The Author(s) 2019. Published by Oxford University Press on behalf of Entomological Society of America.)
Databáze:	MEDLINE
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