abnormal susceptibility to Coronaviridae infection +
abnormal susceptibility to Flaviviridae infection +
abnormal susceptibility to Orthomyxoviridae infection +
abnormal susceptibility to Paramyxoviridae infection +
abnormal susceptibility to Picornaviridae infection +
abnormal susceptibility to Togaviridae infection +
any anomaly in the likelihood that an organism will develop ill effects from infection with one of the small, enveloped viruses with single-stranded, positive-sense, non-segmented RNA genomes of 10-12 kb or from components of or toxins produced by a virus from this Family