Within the framework of the Health Belief Model, this paper examines correl
ates of perception of AIDS susceptibility among 846 drug-using migrant farm
workers and their sex partners. Significant but relatively small differenc
es by ethnicity and gender were found. The data showed a consistent signifi
cant statistical relationship between frequency of drug use, high-risk sexu
al behavior, and perception of AIDS susceptibility. Perception of AIDS susc
eptibility was significantly related to a subsequent reduction in sexual ri
sk behaviors. Consistent with the Health Belief Model, the data suggest tha
t increasing perception of AIDS susceptibility may be an important motivato
r in reducing high-risk behaviors.