Oregon Public Broadcasting

So far this summer, public health officials have pinpointed 10 testing sites in Oregon with mosquitoes that are carrying the West Nile virus. That's in Morrow, Baker, Jackson and Klamath counties. No human cases have been identified so far in 2014 in Oregon, but one person's symptoms in Walla Walla County last week raised some concern.

Humans can get West Nile if they are bitten by an infected mosquito. Mild cases can cause fever and flu-like symptoms, but severe infections could mean brain inflammation or even death. However, the Oregon Health Authority says that most people can have the virus and experience no symptoms.

This summer, West Nile was first detected in Oregon in late July when tests found three contaminated mosquito pools in Morrow County. Experts test for the virus in the summer and through the fall.

Last year, a total of 112 cases were found in 11 counties, which included 16 infected humans. In 2012, there were 87 cases documented.

The Oregon Health Authority has advice on its website to protect yourself from possible infection:

This story originally appeared on Oregon Public Broadcasting.

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