The well-known susceptibility of the young or immature organism to various kinds of infection makes the proper safeguarding of school children one of the primary duties of school hygiene. By far the greatest number of all deaths from diphtheria occur in young children. A speaker at the Third Congress of the School Hygiene Association, recently held in Chicago, pointed out that during the nine years, 1900 to 1908, 22 per cent. of the population of Chicago (that part under 10 years of age) furnished 91 per cent. of the total deaths from diphtheria.
SCHOOL DIPHTHERIA AND THE GERM-CARRIER. JAMA. 2009;301(21):2279. doi:10.1001/jama.2009.747