[Viruses increase the risk of asthma].
D000208:Acute Disease; D001249:Asthma / Q000209:etiology* / Q000821:virology*; D002648:Child; D006801:Humans; D006969:Hypersensitivity, Immediate; D012141:Respiratory Tract Infections / Q000150:complications*; D012307:Risk Factors; D014777:Virus Diseases / Q000150:complications*