Professor Paul Hunter from the University of East Anglia notes that almost every child contracts HMPV by five years of age, with reinfections occurring throughout life. “HMPV typically causes cold-like symptoms that recover by themselves within 2 to 5 days. Severe cases are rare but can occur in vulnerable groups,” he says.

India TV’s claims that HMPV is a mysterious virus, or speculation that a new virus may have arisen out of China, are false.

The pictures emerging are arresting: a hospital waiting room in Beijing, full of masked patients apparently attached to drips; crowds of mask-wearing commuters making their way through the city. If it all seems unnervingly familiar,

Cases of human metapneumovirus, or HMPV, a contagious virus that can lead to respiratory disease, is reportedly spiking in northern China. Infectious disease experts say risk to the U.S. is low.