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What to Know About HMPV, the Respiratory Virus with No Cure Surging Across the US
The CDC reports widespread HMPV infections with no antiviral treatments, affecting young children, older adults, and immunocompromised people during typical winter-spring circulation.
WastewaterSCAN data indicated high HMPV concentrations in San Francisco, Sacramento, and Napa, while officials in New Jersey reported elevated positivity for the virus at emergency rooms across the state.
HMPV, a virus in the same family as RSV, spreads through close personal contact, coughing, or touching contaminated surfaces, according to the U.S. Centers for Disease Control and Prevention.
Symptoms typically include cough, fever, and shortness of breath; the CDC reports the virus "can cause upper and lower respiratory illness" that may progress to pneumonia or bronchitis.
While there are no targeted antivirals for HMPV, most patients recover with rest and fluids, though young children, older adults, and those with weakened immune systems face risks for severe disease.
The CDC emphasizes good hand hygiene and covering coughs to prevent infection, especially within schools and childcare settings, noting that travel typically does not amplify these community-associated infections.