Genetic diversity of Anaplasma and Ehrlichia bacteria found in Dermacentor and Ixodes ticks in Mongolia

In this study, ticks were collected, identified, and pooled (n = 299) from three distinct environments across central Mongolia. Each pool was initially tested for Anaplasma/Ehrlichia using a 16S rRNA PCR assay that detects both genera, and specific PCR testing was done to identify those positive samples. Maximum likelihood estimation (MLE) of infection rates of ticks collected from the environment in Selenge aimag (province) found infection rates of Ixodes persulcatus ticks to be 2.0% (95% CI: 0.7, 4.3%) for A. phagocytophilum and 0.8% (95% CI: 0.1, 2.5%) for both nonspecific Ehrlichia and Anaplasma. Ehrlichia muris was only detected in I. persulcatus ticks collected from the Selenge aimag, where the MLE was 1.2% (95% CI: 0.1, 2.5%). The calculated MLE infection rate of Anaplasma spp. in questing Dermacentor nuttalli ticks ranged from 1.9% (95% CI: 1.1, 9.1%) in the Tov aimag to 2.3% (95% CI: 1.3, 10.8%) in the Selenge aimag. However, when examining MLE in ticks removed from livestock, estimates increase substantially, ranging from 7.8% (95% CI: 4.2, 13.3%) in Dornogovi to 22.5% (95% CI: 14.3, 34.3%) in Selenge, suggesting that livestock play a key role in disease maintenance. Considering the collective economic losses that can result from these pathogens and the potential for illness in nomadic herdsmen, these results highlight the need for enhanced TBD surveillance and prevention measures within Mongolia.
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research

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(CBS News) – New government research shows that tickborne diseases like Lyme disease continue to rise. The report from the Centers for Disease Control and Prevention finds that in 2017, state and local health departments reported a record number of cases of illnesses spread by ticks. Cases of Lyme disease, Powassan virus; spotted fever rickettsiosis, including Rocky Mountain spotted fever, anaplasmosis, ehrlichiosis, babesiosis and tularemia all increased last year. The CDC said there were 59,349 confirmed cases of tickborne diseases in 2017, up from 48,610 in 2016. In past years, h...
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Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
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Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
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Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
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Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
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