
California Faces Uptick in HMPV, a Cold-Like Virus With No Vaccine
Public health officials report rising human metapneumovirus (HMPV) infections in parts of California, with wastewater data showing higher concentrations in Merced, Novato and Sunnyvale; there is no vaccine or specific antiviral for HMPV, and most infections are mild but can be severe for immunocompromised individuals, young children, and older adults. The virus typically peaks in late winter to spring and was disrupted by COVID-19, though seasonality is returning. Prevention focuses on handwashing, cleaning touched surfaces, improving ventilation, and avoiding sick people; consult a clinician if symptoms worsen. LA County levels are currently low to moderate, signaling a cautious but not alarmed public health situation.








