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with researchers, regulatory officials and practicing veterinarians to educate and inform the horseowning public so that if West Nile fever rears its ugly head, we will have a plan of action to fight it. Onemajornew disease a year emerges in humans. Dr. Ferraro stated, 'Today's disease is West Nile fever; tomorrow, it could be something else;' and the CEH and the Bernard and Gloria Salick Equine VIral Disease Laboratory plan to be prepared to meet the challenge. From The CEH Update The Center for Equine Health UC Davis School of Veterinary Medicine
PENNSYLVANIA ALSO PREPARES A web site has been established to provide the public with background
information about the disease caused by West Nile virus in Pennsylvania. Educating people on how they can eliminate mosquito-breeding areas, such as tarpaulins or old tires which can collect water, near their homes is an important part of the program. The Department of Environmental Protection will be responsible for monitoring mosquito pools for the presence of virus. There are more than 500 mosquito-monitoring sites in Pennsylvania. The Department of Ariculture monitors wild birds, sentinel chickens, and horses, and the Department of Health will work with physicians to monitor human health. www.WestNile.state.pa.us The virus is carried by mosquitoes, primarily those ofthe Culex species. Other arthropods such as ticks may transmit the disease under some circumstances. The normal reservoir is wild birds which may have high titers of circulating virus and so can infect mosquitoes that bite them.
Other vertebrates, including horses, camels, cattle, dogs, frogs, and humans, can become infected and seroconvert, but documentation of virus isolation from non-bird species is rare. These animals have low levels and short duration of viremia and are unlikely to infect mosquitoes, and are considered "dead end" hosts. The virus is very labile and does not survive long in dead animals or in the environme~t. It is easily destroyed by disinfectants. If the virus is detected in Pennsylvania, a mosquito control program will be implemented, and will continue until the virus and mosquitoes are under control. From PVMA News, July/Aug, 2000
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Featuring Steel Frame Construction Volume 20, Number 8, 2000
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