Air Disinfection in Day Schools.

THE prevalence of respiratory infection during the season of indoor congregation I suggests a natural relationship between ventilation and communicable disease. Reduction by radiant air disinfection, of surgical infection 2 and cross-infection between sick children continuously exposed in pediatric wards,3 and continuous aggregations of infants in a nursery 4 and children in an orphanage 5 and dvnamic spread of childhood contagion 6 through intermittent aggregations in classrooms of day schools 7 offers experimental evidence of the importance of sanitary ventilation in the control of respiratory disease. It may not now be premature in the interest of good design, to attempt a preliminary comparison of results from 6 years' study in one irradiated school with the results obtained under a different design during 3 years in two other schools.