ETIOLOGY AND SEASONAL INCIDENCE OF ACUTE NONBACTERIAL RESPIRATORY INFECTIONS IN ADULTS WITH   EMPHASIS ON INFLUENZA.
D000208:Acute Disease; D000328:Adult; D006801:Humans; D015994:Incidence; D007251:Influenza, Human; D007564:Japan; D012141:Respiratory Tract Infections; D012621:Seasons; D013223:Statistics as Topic; D014777:Virus Diseases
INFLUENZA; JAPAN; RESPIRATORY TRACT INFECTIONS; SEASONS; STATISTICS; VIRUS DISEASES