[The epidemiological analysis of Salmonella typhimurium infections in cattle--results of lysotyping and biochemotyping in the region of East Thuringia from 1974 to 1991].

597 strains of Salmonella typhimurium found in samples from cattle in Eastern Thuringia from 1974 to 1991 were investigated to their phage types and biochemotypes. 21 different combined types were found out among which the phage types n.c. 1/72/n. c.(204), 2 b/23 (92) and 1 a/9 (49) dominated at certain times. With the help of two examples it is shown that cases of Salmonellosis with Salmonella typhimurium within one farm occurring one after another can be different infections that are independent from each other. The complex typings are capable to clear up epidemiological connections and therewith support the control of infections and the protection of people's health consequently.