Human metapneumovirus (HMPV) is a virus that usually causes symptoms similar to a cold. You might cough or wheeze, have a runny nose or a sore throat. Most cases are mild, but young children, adults over 65 and people with weakened immune systems are at a higher risk for serious illness. HMPV is common — most people get it before they turn 5 Overview The symptoms of human metapneumovirus...