SPOKANE, Wash. — Two Spokane County mosquitoes sample tested positive for West Nile virus, according to Spokane Regional Health District officials.
Officials said there have not yet been any cases identified in humans, birds or horses, but early to mid-August typically marks the first onset of symptoms in these groups.
West Nile virus is spread through the bite of an infected mosquito. Although less than one percent of people who are infected develop severe illness, some are at higher risk of severe disease, including those who are age 60 or older, and those with compromised immune systems or underlying medical conditions.
Symptoms include headache, fever, neck discomfort, muscle and joint aches, swollen lymph nodes, and a rash. These usually develop two to 14 days after being bitten by an infected mosquito.
There is currently no West Nile vaccine for humans.
Last year, a Kootenai County resident contracted West Nile Virus.
“While we expect mosquito populations to dwindle as the weather gets cooler and the days get shorter, continued warm temperatures will contribute to prolonged mosquito activity and thus, prolonged risk for acquiring WNV. It only takes one bite to acquire WNV,” said Sandy Phillips, technical advisor for SRHD’s Zoonotic program.
“Standing water is a breeding ground for mosquitoes. People can afford themselves a level of protection by draining anything around the home that holds water, as well as preventing exposure to bites,” Phillips added.
Officials emphasized that smoke from wildfires does not impact mosquito levels or behavior – another reason to remain vigilant.
To avoid mosquito bites:
• Routinely empty anything that holds water
• Dress in long-sleeved shirts and long pants where needed
• Use properly fitted door and window screens, and stay indoors around dawn and dusk
• Use a mosquito repellent when outdoors