The records of 59 children (<15 years old) with influenza A2/Hong Kong/68 virus infection and 57 with respiratory syncytial virus infection who had a clinical respiratory illness were studied in an attempt to determine whether specific signs or symptoms could enable one to distinguish these two infections clinically. Although certain signs and symptoms may be more commonly associated with one viral infection than with the other, they were not specific for either. Definitive diagnosis depends on virologic isolation and identification.
Hoekstra RE, Herrmann EC, O'Connell EJ. Virus Infections in Children: Clinical Comparison of Overlapping Outbreaks of Influenza A2/Hong Kong/68 and Respiratory Syncytial Virus Infections. Am J Dis Child. 1970;120(1):14–16. doi:10.1001/archpedi.1970.02100060048004
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