Salmonella Typhimurium in Kolkata: Evidence of Intra-familial Transmission

Salmonellosis has been recognized as one of the major public-health problems in many parts of the world, and Salmonella enterica serovar Typhimurium is the commonest serotype encountered in most geographical situations (1). Endemicity of Salmonella has been shown to be maintained through a cyclic order from man to the environment and vice-versa (2). Explosive outbreak due to a common-source contamination is rather a rare event, and person-to-person transmission has been believed to be operating in the spread of S. enterica serovar Typhimurium (3-5).