[Preliminary study on leprosy subclinical infection and its sero-epidemiology]

The detection of subclinical infection with M. leprae among 360 household contacts of leprosy and 95 healthy controls was conducted with PGI-ELISA in leprosy-endemic areas. The relationship of age at infection, and onset with epidemic trends was explored basing on the distribution features of subclinical infection with M. leprae in household contacts of leprosy. In addition, the multiple linear regression was used to analyse the factors affected the level of antibody in leprosy.