Between 26 January and 5 March 2015, the Nigeria Centre for Disease Control (NCDC) of the Federal Ministry of Health of Nigeria notified WHO of 652 suspected cases of meningococcal disease, including 50 deaths. Cases have been reported in 10 local government areas of 2 states, Kebbi and Sokoto. Laboratory tests have confirmed the predominance of Neisseria meningitidis serogroup C in the affected areas, with no other serogroups being identified