Why the study?
Reinfection with hand, foot and mouth disease is not uncommon due to limited cross-protection between enteroviruses, prompting investigation into its epidemiological characteristics and influential factors in Guangzhou.
Population
369,054 HFMD patients aged ≤5 years in Guangzhou
Comparison
Reinfection vs single infection
Design
Surveillance system-based descriptive epidemiological study
Key result
Male sex was associated with a significantly higher risk of hand, foot and mouth disease reinfection compared to female sex (OR 1.18) among children aged ≤ 5 years.
Authors
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Should not yet change HFMD counseling or follow-up; leaves open sex-difference mechanisms and confirmation beyond this cohort.
Observational (n=369,054)
No
Odds Ratio: 1.18 (95% CI 1.14–1.23)
Absolute Event Rate: 3.24% vs 2.79%
p-value: p=<0.001
The HFMD reinfection rate among children ≤5 years in Guangzhou was 3.07%, with higher risks observed in males, younger children, and those infected with non-EV71/CoxA16 enteroviruses.
Zhong et al. (2019) conducted an observational in Hand, foot and mouth disease (HFMD) (n=369,054). Male sex vs. Female sex was evaluated on HFMD reinfection (OR 1.18, 95% CI 1.14-1.23, p=<0.001). Male sex was associated with a significantly higher risk of hand, foot and mouth disease reinfection compared to female sex (OR 1.18) among children aged ≤ 5 years.
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