Viruses Associated with Upper Respiratory Illnesses in Adults

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Abstract
Relative incidences of viruses infecting adults with acute upper respiratory illnesses were investigated in university, industrial, and military personnel appearing at dispensaries in Louisiana and Mississippi, 1958-60. Viruses isolated from pharyn-geal washings in primary and secondary monkey kidney, HeLa and KB cell cultures and embryonated eggs included influenza A2 and B, parainfluenza 1 and 2, herpes simplex, adenoviruses 3, 4 and 7, Coxsackie A9, B2 and B5, and murivirus 2. Beta-hemolytic strepto -cocci, Groups A, C, G were obtained from throat cultures. Designated respirovirus infections were cases with complement-fixing or neutralizing antibody responses with murivirus 1 and 2, Salisbury HGP rhino-virus, Coxsackie A9, A21, B2 and those with hemagglutination-inhibition and neutralization titer increase with ECHO 11. Simultaneous antibody responses to more than 1 of these antigens occurred in most instances and precluded designation of a specific infecting virus. This was the largest category with serologic evidence of infection and most of these were probably associated with muriviruses or similar viruses. Including those from which beta-hemolytic streptococci were isolated, two-thirds of the upper respiratory illnesses could be associated with an infecting agent. Analysis of serologic results according to clinical features of associated illnesses revealed the same agents causing infection in each clinical classification, but there were variations in incidence within each category.
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