|Update: West Nile Virus in Maryland|
BALTIMORE (September 12, 2012) – With just over half of the surveillance season for West Nile virus behind us, 25 cases have been detected in Maryland residents, including two fatalities. The cases have been found in 13 counties; all of the infected individuals have been adults.
“Since West Nile virus was first detected in Maryland, it has had an impact on every part of the state," said DHMH Secretary Dr. Joshua M. Sharfstein. "It’s important for all Marylanders to take basic actions to reduce the risk of getting infected."
Measures people can take to protect themselves include:
Most individuals infected with West Nile virus will not have any symptoms. People that do develop illness will usually have any combination of fever, headache, body aches, skin rash and swollen lymph glands. These symptoms generally appear 3 to 15 days following the bite of an infected mosquito. Less than one percent of persons exposed to the virus will develop more severe infections with symptoms such as headache, high fever, neck stiffness, stupor, disorientation, coma, tremors, convulsions, muscle weakness and paralysis. In rare instances, WNV can be fatal. Persons over 50 years of age have the highest risk of developing more severe disease. People who are immunocompromised may also be at high risk of WNV infection.
The number of human WNV cases in Maryland has varied over the past several years. Seventy-three human WNV cases were reported in the peak year of 2003. Twenty-three cases were reported in 2010, and 19 human WNV cases were identified in 2011.
Residents are urged to monitor their own yards and gardens for standing water that can serve as a breeding ground for mosquitoes. Small amounts of water in a discarded can or container will support dozens of mosquitoes. To eliminate mosquito-breeding areas:
Although birds are not routinely tested for WNV in Maryland, sick or injured birds can be reported to an appropriate local wildlife rehabilitator. Residents can call 1-877-463-6497 for a list of licensed rehabilitators or visit the Maryland Department of Natural Resources web site at http://www.dnr.state.md.us/
From now until the end of the West Nile virus surveillance season on October 31, 2012, the Department will update case counts online each Wednesday by noon. In addition, the Department will include county-level data as part of its surveillance report. To view the surveillance report, visit: http://ideha.dhmh.maryland.
For additional information on West Nile virus, visit: