Malaria Detected in Washington

While local cases of malaria are rarely reported in the United States, there were 10 cases across four states in 2023.

According to a news release, Washington State may soon be added to this list of affected areas.

On August 6, 2025, a press release announced that a resident of East Pierce County, who had not traveled recently, was diagnosed with malaria in early August. Dr. James Miller, the Tacoma-Pierce County Health Officer, stated, "The risk of contracting malaria in Pierce County remains very low."

"Malaria is generally rare in the U.S., and the vast majority of cases occur after exposure to countries where malaria transmission is ongoing."

In the U.S., approximately 2,000 to 2,500 cases of malaria are reported each year, primarily linked to travel. In 2025, states like Florida have reported numerous travel-related cases (28), related principally to travelers from Cuba.

Previously, Florida reported local cases on both coasts.

It is important to note that malaria does not spread directly from person to person.

Malaria is a mosquito-borne disease caused by a parasite. The incubation period—the time from infection to the onset of symptoms—ranges from 7 to 30 days.

Malaria can be treated and cured with prescription antimalarial medications; however, if not diagnosed and treated quickly, it can become life-threatening.

In Africa, two approved vaccines that help prevent malaria are currently in use. However, as of August 7, 2025, these vaccines are not available in the U.S.