Peer-reviewed article
Parental Socio-Economic Factors and the Risk of Invasive Bacterial Infections in Children: A Register-Based Finnish Study.
Anniina K, Teemu H, Tea N, Karoliina K, Matti R et al. ·
Summary
Written by AI, not yet AICS's view · claude-haiku-4-5-20251001This Finnish study examined whether parental socio-economic status affects the risk of serious bacterial infections in children under 16. Using national health registers, researchers compared children with blood or spinal fluid infections caused by five common bacteria against matched controls, and looked at parental income and education levels. The study found that lower parental income and maternal education showed only a slight, mostly non-significant association with increased infection risk, suggesting that even in countries with universal healthcare, socio-economic factors may play a minor role in severe childhood infections.
Key points
- Risk of severe bacterial infection was not statistically significantly increased with lowest parental income (OR 1.09, 95% CI 0.94-1.26)
- Lower maternal education showed only a slight trend toward increased risk (primary education OR 1.10, secondary education OR 1.07)
- The association was more evident for Escherichia coli infections
- Study included 2,500+ children with invasive bacterial infections over 2002-2016
- Findings suggest limited socio-economic gradient in severe infections despite universal healthcare system
Limitations
This is an observational register-based study that can identify associations but cannot establish causation. The study does not explain the mechanisms behind observed associations or explore other potential confounding factors beyond parental income and education.
Abstract
Aim Little is known about how socio-economic factors influence severe childhood bacterial infections. We explored whether parental socio-economic status correlates with the risk of invasive bacterial infections in the offspring. Methods Data on children < 16 years with community-acquired blood or cerebrospinal fluid culture-positive bacterial infections during 2002-2016 were collected from the National Infectious Diseases Register for the following pathogens: Streptococcus agalactiae, Staphylococcus aureus, Streptococcus pyogenes, Streptococcus pneumoniae and Escherichia coli. Statistics Finland randomly selected five age-, sex- and region-matched controls for cases, including data on parental income and education. Odds ratios (ORs) with 95% confidence intervals (95% CIs) for invasive bacterial infections were estimated using logistic regression. Results The risk of severe bacterial infection was slightly, but not statistically increased with lowest parental income (OR 1.09, 95% CI 0.94-1.26). This risk was more evident with Escherichia coli. Lower maternal education showed a slight trend towards increased risk of severe bacterial infections (ORs: primary education 1.10, 95% Cl 0.97-1.24; secondary education 1.07, 95% Cl 0.98-1.17). Conclusion Despite universal healthcare and a social welfare system, our data suggest that lower parental income and maternal education may be associated with a slightly increased risk of severe bacterial infections.