Human metapneumovirus, also known as HMPV, is a type of common respiratory virus. It belongs to a family of viruses called pneumoviridae – the same group the respiratory syncytial virus (RSV) belongs to. If you have HMPV, you might have mild cold-like symptoms such as sneezing, coughing, runny nose, or sore throat for a few days. In rare cases, you might develop more serious symptoms, especially if you have a weakened immune system or other risk factors. Anyone can get it, but it’s more common in those who are very young or older.