A group of mosquitoes have tested positive for West Nile virus in Antioch, according to the Contra Costa Mosquito and Vector Control District.
It is the first group of mosquitoes that have tested positive for the virus in Antioch this year, according to the district. They were found in the area of Eighth and A streets.
District spokeswoman Deborah Bass said West Nile virus activity remains steadfast.
To reduce the risk of infection, district officials advise residents to dump out standing water and wear mosquito repellent.
Two species of mosquitoes in the county feed on birds in the area and potentially could infect people, according to the district.
Symptoms from the virus include fever, headache, tiredness, body aches and swollen lymph glands and can last a few days to several weeks. In some cases, the virus can result in death, according to the district.
Forty-four people in the county have been diagnosed with West Nile virus since 2005.
This year, 13 groups of mosquitoes, 63 dead birds and six chickens have tested positive for the virus in Contra Costa County.
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