As China continues to monitor an increase in cases of human metapneumovirus (HMPV), here's what you need to know about the illness.

Experts say China's rise in HMPV cases is “consistent with global patterns”. But how does the disease compare to COVID-19 and how can we protect ourselves?

As China experiences a rise in respiratory infections this winter, one little-known virus has gotten a lot of attention – and some people may worry whether the rise in cases could be felt more broadly around the world.