A respiratory virus that currently lacks a specific cure or vaccine is moving through the United States, prompting health officials to monitor its rapid spread.
Known as human metapneumovirus (HMPV), the infection is primarily transmitted through respiratory droplets and contaminated surfaces. While most people experience mild, cold-like symptoms, the virus is now being detected at “high” levels in wastewater across the country.
Data from the CDC confirms that HMPV is responsible for a growing percentage of respiratory infections, specifically as other common illnesses like the flu and Covid begin to taper off. Major urban centers, including New York City, Chicago, and the San Francisco Bay Area, are seeing particularly high prevalence. “In the late winter, early spring, it can account for five to 10 percent of all the respiratory infections that we diagnose in the US. So, it’s definitely out there,” notes Dr. Matthew Binnicker of the Mayo Clinic.
The virus typically presents with a cough, runny nose, and fever, but it can pose a serious threat to vulnerable populations. Seniors over 65, young children, and those with compromised immune systems are at a much higher risk for complications like pneumonia or bronchitis. Because there are no targeted antiviral drugs, medical professionals focus on supportive care, which includes rest, hydration, and, in severe cases, oxygen therapy.
Experts believe the timing of the surge is related to how different viruses interact. Dr. Monica Gandhi, an infectious disease specialist, explains that respiratory viruses often “compete with each other” every season. She points out that while previous Covid waves suppressed other germs, “Other viruses like influenza and HMPV are now getting their chance.”
Because HMPV is an RNA virus that thrives in colder environments, health officials expect the spread to peak through April and persist into June.
To reduce the risk, the CDC advises consistent hand washing, avoiding close contact with sick individuals, and regular cleaning of high-touch surfaces.
