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. Author manuscript; available in PMC: 2017 Dec 20.
Published in final edited form as: Lancet Infect Dis. 2016 Aug 23;16(11):1288–1294. doi: 10.1016/S1473-3099(16)30253-5

Figure 2. Number of suspected meningitis cases by week in Niger (A) between Jan 1, 2003, and June 30, 2015, and (B) during selected epidemic years.

Figure 2

In the epidemics of 2003, 2004, 2008, and 2009, Neisseria meningitidis serogroup A was the predominant serogroup. In the 2006 epidemic, N meningitidis serogroup X was the predominant serogroup. In the epidemic of 2015, N meningitidis serogroup C was the predominant serogroup. MACV=serogroup A conjugate meningococcal vaccine.