MeSH definition : A genus of the family PARAMYXOVIRIDAE (subfamily PNEUMOVIRINAE) where the human and
bovine virions have neither hemagglutinin nor neuraminidase activity. RESPIRATORY
SYNCYTIAL VIRUS, HUMAN is the type species.;
Wikipedia automatic translation : Orthopneumovirus;
A genus of the family PARAMYXOVIRIDAE (subfamily PNEUMOVIRINAE) where the human and
bovine virions have neither hemagglutinin nor neuraminidase activity. RESPIRATORY
SYNCYTIAL VIRUS, HUMAN is the type species.