West Nile Virus is an uncommon viral disease transmitted from infected birds through mosquito bites to humans. Most cases are mild and only one in 200 will develop severe symptoms. Usual symptoms include headache, fatigue, back pain, muscle aches and rash. Symptoms can last a few days. Some people have persistent symptoms for 12 -18 months, especially if immunocompromised—such as people with diabetes, people on cancer-treating medications, dialysis patients or HIV+ people.
There are more cases on the east coast compared to California, but cases have been reported in humans in Contra Costa and Alameda County. Most are very mild and do not require hospitalization. There is no known medical treatment for West Nile Virus infection, although some trials are ongoing.
Prevention is key: Avoid mosquito-infested areas, wear long sleeves if outdoors, and use mosquito repellant frequently. At home, drain any areas with standing water as these are common areas for mosquitos to breed. Cases of West Nile Virus are more common in summer but can extend into early September.
If infection is suspected, report to Alameda Public Health or call the Centers for Disease Control at 800.311.3435. To report dead birds, call 877-WNV-BIRD or visit Westnile.ca.gov.
