METANEUMOVIRUS PNEUMOVIRUS is an RNA virus of the order of mononegavirals. The genome is single-category negative RNA and is therefore classified in group V of the Baltimore classification. Affects airways. It is associated with three important animal diseases: avian pneumovirus that causes infectious rhinotracheitis in turkeys, bovine respiratory syncytial virus and rat pneumonia pneumovirus. Human metapneumovirus is similar to sincitial pneumovirus, but it is a different virus.