Typical landscape of typhoid fever cultures isolated in the TASSR and the use of the phage typing method in anti-epidemic practice

In the Tatar ASSR, in recent years, the incidence of typhoid fever has sharply decreased and is characterized mainly by sporadic cases. The proportion of cases of typhoid fever in epidemic outbreaks in 1962 is 11.9% of the incidence of the whole year. With this nature of the incidence of typhoid fever, the identification of sources of infection, both in individual cases and in epidemic outbreaks, becomes even more difficult. To improve the quality of epidemiological examination in the foci of typhoid fever, many authors recommend using the method of phage typing of typhoid fever cultures.