Can a school-based hand hygiene program reduce asthma exacerbations among elementary school children?

Area of Science:

• Pediatric respiratory health
• Infectious disease prevention
• Public health interventions

Background:

• Viral respiratory infections are a key trigger for childhood asthma exacerbations.
• Effective hand hygiene in schools is challenging to implement consistently.
• Preventing viral spread is crucial for managing pediatric asthma.

Purpose of the Study:

• To assess if enhanced hand hygiene (hand washing plus alcohol-based sanitizer) reduces asthma exacerbations in schools.
• To compare a standardized hand hygiene regimen against usual school practices.
• To evaluate the efficacy of school-based interventions for asthma management.

Main Methods:

• A 2-year, community-based, randomized controlled crossover trial involving 31 schools and 527 students with asthma.
• Schools were assigned to either a control group (usual care) or an intervention group (hand sanitizer, soap, education).
• Generalized estimating equations analyzed monthly asthma exacerbation rates, controlling for individual and school-level factors.

Main Results:

• The hand hygiene intervention did not significantly decrease asthma exacerbations compared to usual care (P = 0.132).
• A significant decrease in asthma exacerbations was observed in year 2 compared to year 1 across both groups (P < 0.001).
• The study enrolled 527 students with asthma across 31 schools.

Conclusions:

• The hand hygiene intervention was not effective in reducing asthma exacerbations.
• Results were confounded by the H1N1 influenza pandemic, which increased general hygiene practices.
• Study findings should be interpreted cautiously due to confounding factors impacting usual care.