Presence of polioviruses and other enteral viruses in sewage: a survey in the Czech Socialistic Republic 1969-1976.

Monitoring polioviruses in sewage is a permanent task within the poliomyelitis vaccination control programme in Czechoslovakia. The results of sewage examination in certain localities of the CSR in the years 1969 to 1976 are reported. During the study years, nearly 3600 samples of sewage were examined.