TACOMA, Wash. (AP) — Health officials say West Nile virus was discovered in a sampling of mosquitoes near the Port of Tacoma earlier this month.

KCPQ-TV reports the Tacoma-Pierce County Health Department took samples from the Gog-le-hi-te Wetlands near the Puyallup River.

Nigel Turner, director of the county Communicable Disease Division, says residents should assume an infection is possible and take precautions to avoid being bitten by mosquitoes.

A single mosquito bite can lead to an infection. Virus symptoms usually develop two to 14 days after a bite and include headache, fever, muscle and joint aches, swollen lymph nodes and rash.

Health officials say no cases of the virus in area residents have been reported. The health department plans to set up and monitor five more sites across the county.

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Information from: KCPQ-TV, http://q13fox.com/