title: To the question of stability of Salmonella typhi phage types.
mesh_terms: D001434:Bacteriophage Typing; D002353:Carrier State / Q000382:microbiology; D003604:Czechoslovakia; D006801:Humans; D008242:Lysogeny; D012483:Salmonella Phages; D012485:Salmonella typhi / Q000145:classification*; D014435:Typhoid Fever / Q000382:microbiology