HQ announces first death from West Nile virus in 2021

SAN LUIS OBISPO, CA – The first death of 2021 from West Nile virus has been confirmed in San Luis Obispo County, the California Department of Public Health announced this week.

“West Nile virus activity in the state is increasing, so I urge Californians to take all possible precautions to protect themselves against mosquito bites,” said Dr Tomás J. Aragón, director of the Department of California Public Health and state public health official.

The deadly virus is transmitted when people or animals are bitten by an infected mosquito. West Nile virus was found in 45 dead birds from six Golden State counties and 177 mosquitoes from 13 counties on Friday, public health officials said.

Temperatures are rising across the state this week, which could increase the number of mosquitoes and infections, authorities said.

“So far this season, activity is within expected levels,” officials said in a statement. “The risk of illness from WNV generally increases at this time of year and is highest throughout the summer and early fall.”

West Nile virus is usually amplified by the climate, the number of birds and mosquitoes in the area, and the level of viral immunity in the birds.

While the risk of serious illness is relatively low, less than 1% could develop serious neurological diseases such as encephalitis or meningitis, officials said. Californians 50 and older and those with diabetes or high blood pressure are more likely to get sick.

The CRPD offered the following tips for staying safe:

1. DEET – Apply an insect repellant containing DEET, picaridin, lemon eucalyptus oil or IR3535 according to label directions. Repellents keep mosquitoes from biting you. Insect repellents should not be used on children under two months of age.

2. DAWN AND DUSK – Mosquitoes that transmit WNV typically bite in the early morning and evening, so it’s important to wear appropriate clothing and repellant if you’re outdoors during these times. Make sure your windows and doors have tight fitting screens to keep mosquitoes out. Repair or replace screens that have tears or holes.

3. DRAIN – Mosquitoes lay their eggs in standing water. Eliminate all sources of standing water on your property by emptying flower pots, old car tires, buckets and other containers. If you know of a pool that is not properly maintained, please contact your local mosquito and vector control agency.

More information is available here.