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.

A handful of cases of the Human Metapneumovirus have been confirmed in India but officials say there's no cause for alarm, according to multiple reports.

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