Abstract
Between 1980 and 1994 the virological laboratory of the Institute of Hygiene and Epidemiology was responsible for the typing of enteroviruses, isolated by other, mainly university, hospital laboratories. Altogether 3333 strains of entero non-polio (EnP) were typed. The number and the most common types of EnP virus isolations varied from year to year. Each year two to three predominant types determined the main character of the EnP associated illness seen.