Conclusion
SECONDARY
Most Belgian primary and secondary schools of both language networks complied relatively well with recommended IPC measures. Poor implementation of all such IPC measures together and separately, by ventilation, hygiene and physical distancing subcategory, showed an increase in the prevalence of anti-SARS-CoV-2 antibodies among pupils and staff in Belgian schools. This association was statistically significant for all IPC measures together in the population compromised of pupils and staff, with thorough IPC measures implementation associated with a 21% decrease in seropositivity. Despite observing comparable effect sizes in the assessment of pupils and staff separately, these did not reach statistical significance, and neither did the trends for the three different IPC measures subcategories. However, this study underlines the potential beneficial effect of IPC measures in reducing the spread of SARS-CoV-2 in a school setting.
