In more severe cases, hospitalization and intensive supportive therapy may be needed. There is no vaccine to protect against infection caused by the West Nile Virus. In New York City, seven of the 62 people confirmed as infected during 1999 died from the virus. Hundreds of people were probably infected but did not exhibit symptoms or seek medical help. Death rates dramatically declined in 2000 due to better recognition of the disease.
Crows are particularly susceptible to West Nile Virus and often die.
Many other species of birds, and animals, while not clinically ill, test positive for West Nile Virus antibodies, demonstrating they had been infected. West Nile Virus can be fatal to horses. See your Veterinarian about a newly developed vaccine for horses or contact the Pennsylvania Department of Agriculture for more information on protecting your horses. Precautions against West Nile Personal Protection Wear long sleeve shirts and long pants with a mosquito repellant containing DEET on your clothing. Always follow directions carefully when applying any repellant to skin.