| a predictable comeback: the second pandemic of infections caused by neisseria meningitidis serogroup a subgroup iii in africa, 1995. | between 14 january and 4 april 1995 we isolated and characterized 44 meningococcal strains in cameroon, chad, niger, and burkina faso; among these was the strain a:4:p1.9/clone iii-1, which was involved in the second meningitis pandemic. this isolate was found in the clonal form in niger and strains of the et-37 complex were also found in the other three study countries, but apparently did not cause epidemics. one strain (y:2a:p1.2,5 (et-37 complex)) was isolated in january 1995 and another (a:4 ... | 1996 | 8706234 |