Colorado continues to be the most affected state (with 1,542 cases and 27 deaths. To date, 4,416 cases and 84 deaths have been reported to the Centers for Disease Control and Prevention of the United States (CDC), with 38 states reporting human cases. West Nile Virus (WNV) in the United States and Canada - Vol. Of the 50 states, 42 have reported human cases. To 2 October 2003, 5,921 human cases and 119 deaths have been reported to the Centers for Disease Control and Prevention (CDC) in the United States. Since the first human case of WNV was detected on 9 July 2003, 6,613 human cases and 139 deaths have been reported to theCenters for Disease Control and Prevention of the UniteStates (CDC). Update on West Nile Virus (WNV) in the Americas - Vol. This week, 450 new cases of WNV infection in 27 states have been reported to the Centers for Disease Control and Prevention of the United States (CDC). This week, 429 new cases of West Nile Virus (WNV) infection from 26 states were reported to the Centers for Disease Control and Prevention of the United States (CDC). 17 (30 October 2003)ĭuring the week running from 23–29 October 2003, a total of 332 human cases of WNV infection were reported from 22 states, including 11 fatal cases from 3 states. 20 (19 November 2003)ĭuring EW 45, 12 states reported a total of 176 human WNV cases (Arizona, Georgia, Kansas, Louisiana, Maryland, Nebraska, New Jersey, New Mexico, Pennsylvania, South Dakota, Tennessee, and Virginia), including 2 fatalities in Louisiana. Six people have shown positive results: four in Chihuahua, one in Sonora, and another in Nuevo León. Up to 10 December 2003, 591 people underwent serological tests for WNV in 25 states. Update on West Nile Virus in Mexico - Vol. On 4 March 2004, the World Organization for Animal Health (OIE) published a report on encephalitis caused by West Nile Virus (WNV) being detected in a four-year-old horse from Indian Creek, Orange Walk district, in the northern part of Belize. Update on West Nile Virus (WNV) in Belize - Vol. Migratory birds are the principal natural reservoirs of such viruses as Avian Influenza, Newcastle, West Nile Virus (WNV) and other rarely studied arboviruses as Mayaro, Oropuche, Tacaiúma, Cacicaporé, San Luís and Rocío. Serological Study on Migratory and Native Birds, Brazil - Vol. In a press release, the Secretary of Health of Puerto Rico confirmed the detection of West Nile Virus (WNV) in three horses from the area around Fajardo, based on the confirmation issued this week by both the Department of Health of Puerto Rico. Report Confirms the Circulation of West Nile Virus (WNV) in Puerto Rico - Vol. Vaccines are available for use in horses but not yet for people.In contrast, in the Americas, the virus has proven highly pathogenic for birds. In Europe, Africa, the Middle East, and Asia, mortality in birds associated with WNV is rare.Mosquitoes of the genus Culex are generally considered the principal vectors of WNV, in particular, Cx.In addition to mosquito bites, WNV may be transmitted through contact with infected animals, their blood, or other tissues.A very small proportion of human infections have occurred through organ transplant, blood transfusions, and breast milk.People over the age of 50, those with underlying medical conditions, and some immunocompromised persons (such as transplant patients) have the highest risk of severe illness from WNV. Preliminary data for 2013 indicate over 1,200 cases of neuroinvasive disease and 114 deaths due to WNV. Centers for Disease Control and Prevention (CDC).
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