YAKIMA, Wash. - The Yakima Health District warns the county of an increase in pertussis, also known as whooping cough, cases seen throughout 2024.

YHD says nine cases were confirmed by a lab in Yakima County in 2024, with three of those in just the last week. While the increase doesn't meet the threshold for an outbreak, YHD says they are remaining vigilant and closely monitoring for more reports.

Whooping cough is a highly contagious infection that spreads through coughing and sneezing. It is particularly dangerous for infants, young children and those with weakened immune systems.

"We urge families to stay up-to-date on their Tdap vaccinations, remain alert for symptoms of pertussis, and prioritize staying home if feeling unwell, especially as we approach the holiday season," said YHD Director of Disease Control Melissa Sixberry. "The Yakima Health District will continue keeping a close eye on the situation and work with healthcare providers and community partners to support the health and safety of our community."

YHD encourages residents to prevent the spread of whooping cough by ensuring vaccines are up-to-date, watching for symptoms, staying home when sick and practicing good hygiene.

More information on whooping cough can be found on the Washington State Department of Health website.

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