Bay Area Detects Rise in Human Metapneumovirus via Wastewater Signals

Wastewater data show high concentrations of human metapneumovirus (HMPV) across Northern California, signaling a regional uptick in a common respiratory virus that can cause cold- or flu-like illness and, in some people (especially young children, seniors, and the immunocompromised), more serious disease; there is no vaccine or antiviral treatment, so prevention centers on hygiene and staying home when sick, with symptoms typically lasting 2–5 days.