October 28, 2010 Two New Confirmed Cases of West Nile Virus

- BATON ROUGE - The Louisiana Department of Health has confirmed two new human cases of West Nile Virus, bringing this year's total to 31. The two new cases come from East Baton Rouge and Iberia parishes. These cases are reported in LDH's weekly Louisiana Arbovirus Surveillance Summary which can be found in the Surveillance Reports Section of the LDH Web site here.

Health officials characterize West Nile infections three ways: neuroinvasive, West Nile fever and asymptomatic. A neuroinvasive illness is severe and typically results in a swelling of the brain or spinal cord. People with this illness are at risk of brain damage or death. West Nile fever is less severe, with most people only suffering mild, flu-like symptoms. Asymptomatic individuals were never ill and were only discovered to have the West Nile virus in their blood when blood work was done for some other reason, such as blood donation. The two new diagnoses are neuroinvasive illness cases, with one case each in East Baton Rouge and Iberia parishes.

This year West Nile Virus in Louisiana is most prevalent in East Baton Rouge parish, with 14 cases. Of the cases in East Baton Rouge Parish, nine were the more serious neuroinvasive disease, one case of West Nile Fever and four asymptomatic cases. Ascension Parish has had one case of neuroinvasive disease, five cases of West Nile Fever and three asymptomatic cases. Iberia Parish has three cases of neuroinvasive disease and Red River, Livingston, St. Tammany and Vermilion parishes each have one case of neuroinvasive disease. West Baton Rouge Parish has one case of West Nile Fever. No deaths have been attributed to West Nile this year.

About 90 percent of all cases are asymptomatic, while about 10 percent will develop West Nile fever. Only a very small number of infected individuals will show the serious symptoms associated with the neuroinvasive disease. Residents who are 65 years old and older are at higher risk for complications, but everyone is at risk for infection. West Nile Virus is spread to humans through mosquito bites. LDH encourages residents to take precautions to protect themselves.

To avoid being bitten by mosquitoes, residents can take the following precautions:

Residents can also help control the mosquito population by eliminating standing water around their home, which is where mosquitoes breed. Louisianians are encouraged to follow these tips:

The Louisiana Department of Health strives to protect and promote health statewide and to ensure access to medical, preventive and rehabilitative services for all state citizens. To learn more about LDH, visit http://www.dhh.louisiana.gov. For up-to-date health information, news and emergency updates, follow LDH's blog at www.myhealthla.org, Twitter at http://twitter.com/La_Health_Dept and search for the Louisiana Department of Health on Facebook.

 

Surgeon General Ralph L. Abraham, M.D.

Secretary Bruce D. Greenstein

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