[The scientific, organizational and methodological bases for the epidemiological surveillance of streptococcal group A infection in a large city].

These investigations have made it possible to establish the extent and scale of the spread of streptococcal infection (group A) and its socioeconomic importance in Moscow, a great mega-police of the world. The deterioration of the epidemiological situation in recent years, accompanied by an increase in morbidity and mortality caused by streptococcal infection, has been demonstrated. The program and conceptual foundations of epidemiological surveillance on this infection in Moscow are presented.