| the 1998 senegal epidemic of meningitis was due to the clonal expansion of a:4:p1.9, clone iii-1, sequence type 5 neisseria meningitidis strains. | between january and april 1998, a meningitis outbreak due to serogroup a meningococcus took place in senegal. the outbreak began in gandiaye, 165 km to the east of dakar, and progressed towards the towns of gossas, niakkhar, guinguineo, fatik, foundiougne, dioffior, sokone, kaolack, and nioro. at the same time, the outbreak reached regions of kaffrine, koungheul, and tambacounda in the east of senegal. a total of 1,350 cases and 200 deaths were reported. the who collaborating center in marseille ... | 2000 | 10618087 |