| molecular epidemiology of meningococci isolated in niger in 2003 shows serogroup a sequence type (st)-7 and serogroup w135 st-11 or st-2881 strains. | in 2003, in the zinder and maradi regions (niger), epidemics were due to serogroup a:4:p1.9 meningococci belonging to sequence type 7 (st-7). in niamey, only sporadic cases were reported: 55% of the meningococcus strains were in serogroup a, and 38% were in serogroup w135 and could be placed in st-11, identical to the 2002 burkina faso epidemic clone, and in st-2881, a new st. | 2005 | 15750126 |