Article in Japanese

Two cases of non-typhoidal Salmonella infection suspected to be transmitted within a family

Kanan Yamada^1）, Kisho Shimura^2）, Hiroyuki Shimizu^3）

Non-typhoidal Salmonella （NTS） are gram-negative bacteria that primarily cause gastroenteritis and bacteremia. Foodborne and animal contact can transmit NTS, whereas human-to-human transmission is rare. Here, we report two cases of NTS infection in the same household members, in which human-to-human transmission was suspected.
Case 1 is a 3-year-old girl who developed NTS gastroenteritis six days before a 1-year-old boy developed NTS gastroenteritis. Case 2 is a 1-month-old boy who developed NTS bacteremia 14 days after a 1-year-old girl developed NTS gastroenteritis. Foodborne and animal contact transmission were not suspected except for the three-year-old girl. In households with infants, in addition to food management and animal contact measures, guidance on hand hygiene is considered important in the controlling NTS infection.

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1）Department of Pediatrics, Fujisawa City Hospital
2）Department of Pediatric Emergency, Fujisawa City Hospital
3）Department of Clinical Laboratory Medicine, Fujisawa City Hospital

Key words	non-typhoidal Salmonella, human-to-human transmission
Received	October 10, 2024
Accepted	March 2, 2025

37 (2)：184─190,2025