L. Lapeyssonie, La meningite cerebrospinale en Afrique. Bull World Health Organ, vol.28, pp.3-114, 1963.

A. M. Molesworth, M. C. Thomson, S. J. Connor, M. P. Cresswell, and A. P. Morse, Where is the Meningitis Belt? Defining an area at risk of epidemic meningitis in Africa, Trans R Soc Trop Med Hyg, vol.96, pp.242-249, 2002.

P. Boisier, P. Nicolas, S. Djibo, M. Taha, and J. I. , Meningococcal meningitis: Unprecedented incidence of serogroup X-related cases in 2006 in Niger, Clin Infect Dis, vol.44, pp.657-663, 2007.
URL : https://hal.archives-ouvertes.fr/pasteur-00561840

J. M. Collard, Z. Maman, H. Yacouba, S. Djibo, and P. Nicolas, Increase in Neisseria meningitidis serogroup W135, Emerg Infect Dis, vol.16, pp.1496-1498, 2010.
URL : https://hal.archives-ouvertes.fr/pasteur-00561832

F. Denis, J. L. Rey, A. Amadou, P. Saliou, and M. Prince-david, Emergence of meningococcal meningitis caused by W 135 subgroup in Africa, Lancet, vol.2, pp.1335-1336, 1982.

S. Djibo, P. Nicolas, J. Alonso, A. Djibo, and D. Couret, Outbreaks of serogroup X meningococcal meningitis in Niger, Trop Med Int Health, vol.8, pp.1118-1123, 1995.

B. Koumare, R. Ouedraogo-traore, I. Sanou, A. A. Yada, and I. Sow, The first large epidemic of meningococcal disease caused by serogroup W135, Vaccine, vol.25, pp.37-41, 2002.

S. Materu, H. S. Cox, P. Isaakidis, B. Baruani, and T. Ogaro, Serogroup X in meningococcal disease, Western Kenya. Emerg Infect Dis, vol.13, pp.944-945, 2007.

L. W. Mayer, M. W. Reeves, N. Al-hamdan, C. T. Sacchi, and M. K. Taha, Outbreak of W135 meningococcal disease in 2000: not emergence of a new W135 strain but clonal expansion within the electophoretic type-37 complex, J Infect Dis, vol.185, pp.1596-1605, 2002.

N. Nathan, A. M. Rose, D. Legros, S. R. Tiendrebeogo, and C. Bachy, Meningitis serogroup W135 outbreak, Emerg Infect Dis, vol.13, pp.920-923, 2002.

P. Nicolas, S. Djibo, F. Sidikou, B. Tenebray, and R. Stor, Epidemics caused by group X meningoccal meningitis in Africa in, Med Trop, vol.66, p.494, 2006.

A. J. Pollard, M. Santamaria, M. Maiden, P. Nicolas, and S. Handford, W135 Meningococcal Disease in Africa. Emerg Infect Dis, vol.9, pp.1503-1504, 2003.

M. Taha, D. Chatelet, I. P. Schlumberger, M. Sanou, I. Djibo et al., Neisseria meningitidis serogroups W135 and A were equally prevalent among meningitis cases occurring at the end of the 2001 epidemics in Burkina Faso and Niger, J Clin Microbiol, vol.40, pp.1083-1084, 2002.

B. Greenwood, Manson Lecture. Meningococcal meningitis in Africa, Trans R Soc Trop Med Hyg, vol.93, pp.341-353, 1999.

E. Tikhomirov, M. Santamaria, and K. Esteves, Meningococcal disease: Public health burden and control, World Health Stat Q, vol.50, pp.170-177, 1997.

P. Nicolas, J. P. Chippaux, and G. Martet, Epidemic of meningococcal meningitis in Africa in 1996: current data, Med Trop (Mars), vol.56, pp.203-204, 1996.

J. Riou, S. Djibo, L. Sangare, J. Lombart, and P. Fagot, A predictable comeback: The second pandemic of infections caused by Neisseria meningitidis serogroup A subgroup III in Africa, Bull World Health Organ, vol.74, pp.1996-181, 1995.

P. Nicolas, G. Norheim, E. Garnotel, S. Djibo, and D. A. Caugant, Molecular epidemiology of Neisseria meningitidis isolated in the African meningitis belt between 1988 and 2003 shows dominance of sequence type 5 (ST-5) and ST-11 complexes, J Clin Microbiol, vol.43, pp.5129-5135, 2005.
URL : https://hal.archives-ouvertes.fr/pasteur-00561862

A. L. Reingold, C. V. Broome, and A. W. Hightower, Age-specific differences in duration of clinical protection after vaccination with meningococcal polysaccharide A vaccine, Lancet, vol.2, pp.114-118, 1985.

, Detecting meningococcal meningitis epidemics in highly-endemic African countries, World Health Organization, vol.75, pp.306-309, 2000.

F. M. Laforce, K. Konde, S. Viviani, and M. P. Preziosi, The Meningitis Vaccine Project, Vaccine, vol.25, pp.97-100, 2007.

F. M. Laforce and J. Okwo-bele, Eliminating epidemic group A meningococcal meningitis in Africa through a new vaccine, Health Aff (Millwood), vol.30, pp.1049-1057, 2011.

G. W. Ajello, J. C. Feeley, P. S. Hayes, A. L. Reingold, and G. Bolan, Transisolate medium: a new medium for primary culturing and transport of Neisseria meningitidis, Streptococcus pneumoniae, and Haemophilus influenzae, J Clin Microbiol, vol.20, pp.55-58, 1984.

D. E. Craven, C. E. Frasch, J. B. Robbins, and H. A. Feldman, Serogroup identification of Neisseria meningitidis: comparison of an antiserum agar method with bacterial slide agglutination, J Clin Microbiol, vol.7, pp.410-414, 1978.

L. S. Katz, C. R. Bolen, B. H. Harcourt, S. Schmink, and X. Wang, Meningococcus genome informatics platform: A system for analyzing multilocus sequence typing data, Nucleic Acids Res, vol.37, pp.606-611, 2009.

J. E. Russell, K. A. Jolley, I. M. Feavers, M. Maiden, and J. Suker, PorA variable regions of Neisseria meningitidis, Emerg Infect Dis, vol.10, pp.674-678, 2004.

E. Thompson, I. M. Feavers, and M. Maiden, Antigenic diversity of meningococcal enterobactin receptor FetA, a vaccine component, Microbiology, vol.149, pp.1849-1858, 2003.

P. A. Kristiansen, F. Diomande, S. C. Wei, R. Ouedraogo, and L. Sangare, Baseline meningococcal carriage in Burkina Faso before the introduction of a meningococcal serogroup A conjugate vaccine, Clin Vaccine Immunol, vol.18, pp.435-443, 2011.

R. Website, , 2012.

. Who-website, , 2012.

X. Bai and R. Borrow, Genetic shifts of Neisseria meningitidis serogroup B antigens and the quest for a broadly cross-protective vaccine, Expert Rev Vaccines, vol.9, pp.1203-1217, 2010.

K. A. Jolley, C. Brehony, and M. Maiden, Molecular typing of meningococci: recommendations for target choice and nomenclature, FEMS Microbiol Rev, vol.31, pp.89-96, 2007.

R. Ouedraogo-traore, E. A. Hoiby, I. Sanou, L. Sangare, and N. Kyelem, Molecular characteristics of Neisseria meningitidis strains isolated in Burkina Faso in 2001, Scand J Infect Dis, vol.34, pp.804-807, 2002.

P. L. Raghunathan, J. D. Jones, S. R. Tiendrebeogo, I. Sanou, and L. Sangare, Predictors of immunity after a major serogroup W-135 meningococcal disease epidemic, J Infect Dis, vol.193, pp.607-616, 2002.

I. Delrieu, S. Yaro, T. Tamekloé, B. Njanpop-lafourcade, and H. Tall, Emergence of epidemic Neisseria meningitidis serogroup X meningitis in Togo and Burkina Faso, PLoS ONE, vol.6, p.19513, 2011.

H. Findlow, U. Vogel, J. E. Mueller, A. Curry, and B. Njanpop-lafourcade, Three cases of invasive meningococcal disease caused by a capsule null locus strain circulating among healthy carriers in Burkina Faso, J Infect Dis, vol.195, pp.1071-1077, 2007.