Household Transmission of Human Metapneumovirus and Human Parainfluenza Viruses 1-4 in the United States, 2022-2024
Human metapneumovirus (HMPV) and human parainfluenza viruses (HPIV 1-4) are common causes of seasonal respiratory illness, but their household transmission dynamics remain poorly defined. We analyzed weekly symptom data and nasal swabs from a prospective household surveillance study in Washington and Oregon from June 2...