Human Metapneumovirus (HMPV) is a respiratory virus that may not be on most folk’s radars, but it’s more common than you think — and chances are, you’ve already had it. A recent “outbreak” in northern China has brought HMPV into the spotlight, raising questions about its significance.

Human Metapneumovirus (HMPV) is a common respiratory disease among children and the elderly. Here's what we know about the symptoms and how to avoid it.