Search nationalatlas.gov About Contact Us Partners Products ... Help var content = "This will be a tool tip"; createTTLayer("TTMSGBox",0,0,320,44,false,content); moveTTLayer("TTMSGBox",0,0); Home Map Layers Wildlife Mortality Information - Avian Cholera Map Layer Info Wildlife Mortality Information - Avian Cholera What this map layer shows: The number of bird deaths due to cholera, when each outbreak occurred, and the top five species affected, by county. Background Information Sample Map Avian cholera, also known as fowl cholera, is one of the most common diseases among wild North American waterfowl. It is the result of infection with the bacterium Pasteurella multocida . This bacterium kills swiftly, sometimes in as few as 6 to 12 hours after infection. Live bacteria released into the environment by dead and dying birds can subsequently infect healthy birds. As a result, avian cholera can spread quickly through a wetland and kill hundreds to thousands of birds in a single outbreak. Avian cholera often affects the same wetlands and the same bird populations year after year. This map layer portrays the incidence of avian cholera in the United States. It was produced by the U.S. Geological Survey's National Wildlife Health Center | |
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