Table 1.

Select viral agents associated with upper respiratory infections

Viral family	Highest seasonal prevalence	Additional information
Rhinovirus	Fall/spring	>100 serotypes
Coronavirus	Winter	Viral family causing SARS
Adenovirus	All seasons	Latent infection in lymphoid tissue possible
Enterovirus	Summer/fall	Coxsackie virus associated with myocarditis

Abbreviation: SARS, severe acute respiratory syndrome.