Abstract: This study investigated the degree of compliance and reasons for non-compliance with chemoprophylactic Rifampicin medication among 103 close contacts of memingococcal disease in the greater Auckland region during the period July to September 1996. The study showed a high degree of compliance among close contacts, with 96.1% taking Rifampicin as prescribed. Reasons for compliance were related to the contacts ' perceptions of susceptibility to the illness, the severity of the disease, and the benefits of medical intervention. The contacts found the service provided by the public health staff ws sufficient, and the information provided was valuable