The incidence and spread of a new variant of the B influenza virus among the population of Czechoslovakia in 1959-1961. I. A localised epidemic in Ostrava in 1959.
D003231:Conjunctivitis; D003604:Czechoslovakia; D058872:Epidemics; D006801:Humans; D015994:Incidence; D009981:Influenza B virus; D029524:Betainfluenzavirus; D009975:Orthomyxoviridae
CONJUNCTIVITIS; INFLUENZA VIRUSES