What question did this study set out to answer?

This study aims to identify risk factors associated with sporadic non-typhoidal Salmonella infections in children under five years old.

May 3, 2026

Risk Factors for Sporadic Non-Typhoidal Salmonella Infection Among Children Under Five Years of Age in an Urban Area of Kunming City: A Matched Case-Control Study.

Key Points

This study aims to identify risk factors associated with sporadic non-typhoidal Salmonella infections in children under five years old.
Matched case-control design in Kunming City, China
Assessment of household practices and density among cases and controls
Multivariable logistic regression analysis to estimate adjusted odds ratios
Refrigerated storage of raw eggs is associated with aOR 4.73 (95% CI: 2.02-11.05) for NTS infection
Lack of a separate cutting board for raw and cooked foods has aOR 10.38 (95% CI: 3.81-28.32)
Household density with ≥2 children shows aOR 2.69 (95% CI: 1.18-6.16) and ≥3 children shows aOR 10.16 (95% CI: 2.90-35.60) for increased NTS risk

Abstract

Enteritidis (11.8%). Multivariable analysis revealed that refrigerated storage of raw eggs (adjusted odds ratio aOR = 4.73; 95% confidence interval CI: 2.02-11.05), lack of a separate cutting board for raw and cooked foods (aOR = 10.38; 95% CI: 3.81-28.32), and higher household density (≥2 children: aOR = 2.69; 95% CI: 1.18-6.16; ≥3 children: aOR = 10.16; 95% CI: 2.90-35.60) were independently associated with increased risk of NTS infection. In addition to household hygiene practices, household crowding was identified as a key amplifier of NTS transmission risk. These findings underscore the need for integrated public health strategies that combine targeted hygiene education with structural interventions to reduce overcrowding in urban households.

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Risk Factors for Sporadic Non-Typhoidal Salmonella Infection Among Children Under Five Years of Age in an Urban Area of Kunming City: A Matched Case-Control Study.

Key Points

Abstract

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