نتایج جستجو برای: molecular epizootiology
تعداد نتایج: 635441 فیلتر نتایج به سال:
In the microenvironment concept of avian botulism epizootiology, it is hypothesized that invertebrate carcasses may serve both as a substrate for toxin production by Clostridium botulinum type C and as a vehicle for toxin transmission to water birds. We field-tested that hypothesis by attempting to induce botulism in wing-clipped mallard ducks (Anas platyrhynchos) on sewage oxidation ponds in U...
Estimates of chronic disease prevalence are needed to improve our understanding of marine disease epizootiology, which is poorly known for marine megafauna such as marine turtles. An emerging worldwide threat to green sea turtles (Chelonia mydas) is fibropapillomatosis (FP), which is a pandemic tumor-forming disease associated with herpes-viruses. We report on a 26-yr FP epidemic in the Hawaiia...
With regard to epizootiology, diseased pigs are the major source of direct infection, while indirect spread is mainly caused by pork pro ducts and mechanical vectors. Information about the role of virus car riers in transmission of the infection is insufficient, but the role of ticks (Ornithodorus genus) and of wild pigs as virus reservoirs is well docu mented. The incidence and distribution...
BACKGROUND Zoonotic cutaneous leishmaniasis (ZCL) is an expanding disease and public health problem in Iran. In the current study, natural Leishmania infection rate and seasonal fluctuation of the infection in Rhombomys opimus population of a hyperendemic focus of ZCL in Iran was investigated. METHODS The study was conducted from October 2006 to October 2008 in Esfahan Province, central part ...
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