| [epidemic of neisseria meningitidis cerebrospinal meningitis in the ruhengeri health district (rwanda)]. | rwanda is a central african country where mean altitude is high (1,800 m), dwelling scattered, and population density important (372/km2). in 1978, a csm epidemic broke out and raged for 4 years. death incidence was very noticeable: 223/100 000. treatment by an unique doses of chloramphenicol proved to be effective. as a consequence of an experimental immunization campaign, limited to one township, local population immunity is still solid after three years. | 1983 | 6865709 |