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Lineage 1 West Nile virus was detected in South Africa in 2010 in a mare and her aborted fetus; previously, only lineage 2 West Nile virus had been detected in horses and humans in South Africa. [32] Kunjin virus is a subtype of West Nile virus endemic to Oceania.
West Nile fever is an infection by the West Nile virus, which is typically spread by mosquitoes. [1] In about 80% of infections people have few or no symptoms . [ 2 ] About 20% of people develop a fever , headache, vomiting, or a rash. [ 1 ]
U.S. West Nile virus (WNV) neuroinvasive disease incidence as of Sep 4, 2012. The West Nile virus quickly spread across the United States after the first reported cases in Queens, New York, in 1999. The virus is believed to have entered in an infected bird or mosquito, although there is no clear evidence.
Both West Nile virus and 'triple E,' which is eastern equine encephalitis, have had an uptick, particularly post-COVID," Dr. Larry Han, an assistant professor of public health and health sciences ...
CNN: What are the symptoms of West Nile virus disease and how serious is it? Dr. Leana Wen: West Nile virus is the No. 1 cause of mosquito-borne disease in the continental US, ...
In 2023, there were 2,406 cases of West Nile virus detected in the U.S. over 47 states, ... (It's worth noting that Puerto Rico, where dengue is endemic, had 933 locally acquired dengue cases.)
West Nile virus is endemic in many parts of the world. The virus has demonstrated an ability to cause sporadic outbreaks and endemic transmission in previously unaffected regions. In recent decades, there has been a significant increase in the frequency and geographic distribution of WNV outbreaks globally.
Since it was first detected in the United States in New York City in 1999, West Nile has expanded throughout North America, and now is endemic in many parts of the U.S., Pastula says.