Abstract:

1583 persons including healthy individuals and some facial derma-tonosus patients,aged from 5 to 74 years old were surveyed for De-modex mites in the schools of Beijing.The total infection rate is 51.99+2.4% (823/1583),among which the rate of infection is 58.04% (473/815) in men and 45.44% (349/768) in women.In-vestigation of 999 healthy students (5-14 years old) of two prima-ry schools disclosed that infection rate is 58.35% (583/999),among them 4 students were examined for Demodex mite over 100,such as 114 mites (girl,81/2 years old), 117(boy,12 years old), 118 (girl,10 years old),and 152 (boy,10 years old) respe-ctively. The infection rates of different age group and occupations of inves tigated persons were compared and the route of trasmission were discussed.