Human Metapneumovirus Fact Sheet 2025. It has been 10 years since human metapneumovirus (hmpv) was identified as a causative agent of respiratory illness in humans. In 2016, it was reclassified from.
In 2016, it was reclassified from. Human metapneumovirus (hmpv) is a common cause of respiratory tract infections in children, adults, elderly, and immunocompromised patients.