Coccidioidin skin testing during pregnancy and in infants and children.

Results of a study of 220 newborn infants in an endemic area indicate coccidioidal infection is not transmitted congenitally. Skin testing of 595 infants and children disclosed that coccidioidal infection may be acquired at a very early age-as early as one month. The children tested were divided into various age groups, and the incidence of infection increased gradually from the lowest age group to the highest.