aids aids dementia complex acute bronchitis adenoviridae adult t-cell leukemia antiviral drug asthma astrovirus avian influenza bornholm disease bronchiolitis cervical cancer chickenpox common cold coronavirus cough cowpox coxsackie b croup cytomegalovirus cytomegalovirus retinitis dna virus diseases database emedicine encephalitis lethargica enterovirus epinephrine exanthem fifth disease foot-and-mouth disease gastroenteritis genital wart hiv headache hepatitis a hepatitis c hepatitis d hepatitis e herpes simplex herpes zoster herpesviridae human t-lymphotropic virus human papillomavirus human parainfluenza viruses icd infectious disease influenza lesion lymphocytic choriomeningitis malaise measles medical subject headings medlineplus metapneumovirus molluscum contagiosum monkeypox mononegavirales mucous membrane mumps muscle weakness myalgia myelitis nasal congestion norovirus oncovirus otitis media palivizumab pharyngitis picornavirus plantar wart pleconaril pneumonia poliomyelitis post-polio syndrome poxviridae premature birth progressive multifocal leukoencephalopathy prophylaxis protein rna virus rabies respiratory system respiratory tract retrovirus rhinorrhea rhinovirus ribavirin roseola rotavirus rubella severe acute respiratory syndrome sexually transmitted disease sinusitis smallpox sneeze subacute sclerosing panencephalitis symptom tick-borne meningoencephalitis transmission electron microscopy tropical spastic paraparesis vaccinia viral hepatitis viral pneumonia viral skin disease virus virus classification wart