[Prevention of nosocomial influenza-like respiratory tract infections in nursing homes].
D000368:Aged; D003428:Cross Infection / Q000382:microbiology / Q000517:prevention & control* / Q000635:transmission; D006801:Humans; D009664:Norway; D009735:Nursing Homes; D012141:Respiratory Tract Infections / Q000382:microbiology / Q000517:prevention & control* / Q000635:transmission