Pathogenetic identification in ticks and yaks from Zoige County, China

Area of Science:

• Veterinary Entomology
• Molecular Diagnostics
• Zoonotic Disease Epidemiology

Background:

• Ticks are significant vectors of infectious diseases globally.
• Tick-borne pathogens like Anaplasma, Rickettsia, and Babesia impact human and animal health.
• Data on tick-borne pathogen prevalence in the eastern Tibetan Plateau is limited.

Purpose of the Study:

• To investigate the prevalence of Anaplasma, Rickettsia, Theileria, and Babesia in ticks collected from yaks.
• To identify tick species carrying these pathogens in Zoige County, eastern Tibetan Plateau.
• To assess the potential zoonotic risk in the region.

Main Methods:

• Collected 957 ticks (Dermacentor silvarum, Haemaphysalis longicornis) and 96 yak blood samples.
• Utilized morphological and molecular techniques for tick and pathogen identification.
• Analyzed 16S rRNA for Anaplasma, Theileria, Babesia, and ompA/ompB genes for Rickettsia.

Main Results:

• Identified varying prevalence rates for the four pathogens across tick species and locations.
• Prevalence ranges: Anaplasma (9.9-50.2%), Rickettsia (29.5-100%), Theileria (16.2-46.4%), Babesia (14.5-58.4%).
• Detected significant pathogen presence in Dermacentor silvarum and Haemaphysalis longicornis.

Conclusions:

• Ticks in the eastern Tibetan Plateau harbor multiple tick-borne pathogens.
• These findings highlight potential zoonotic risks to humans and animals.
• Further investigation into pathogen prevalence in local livestock and ticks is recommended.