Geographical distribution and epidemiological incidence of phage-types of Salmonella weltevreden in India during 1958-1974.

Phage-typing of Salmonella weltevreden was carried out with a set of 6 typing phages and the geographical distribution of 946 strains isolated during 1958-1974 studied. Phage-type 5 was the most predominant type and types 2 and 7 were found exclusively in India. Strains isolated from epidemics and epizootics were studied to assess the epidemiological significance and utility of the scheme based on the set of six typing phages. Phage-types from various sources in different geographical regions were studied with reference to the incidence in man.