M. Bouskraoui, N. Soraa, K. Zahlane, L. Arsalane, C. Doit et al., Study of nasopharyngeal carriage of Streptococcus pneumoniae and its antibiotics resistance in healthy children aged less than 2 years in the Marrakech region (Morocco) Archives De Pediatrie, pp.1265-70, 2011.

D. Neill, W. Coward, J. Gritzfeld, L. Richards, F. Garcia-garcia et al., Density and Duration of Pneumococcal Carriage Is Maintained by Transforming Growth Factor ??1 and T Regulatory Cells, American Journal of Respiratory and Critical Care Medicine, vol.189, issue.10, pp.1250-1259, 2014.
DOI : 10.1164/rccm.201401-0128OC

P. Hill, Y. Cheung, A. Akisanya, K. Sankareh, G. Lahai et al., Nasopharyngeal Carriage of Streptococcus pneumoniae in Gambian Infants: A Longitudinal Study, Clinical Infectious Diseases, vol.46, issue.6, pp.807-821, 2008.
DOI : 10.1086/528688

F. Hu, R. Eutsey, A. Ahmed, N. Frazao, E. Powell et al., In Vivo Capsular Switch in Streptococcus pneumoniae ??? Analysis by Whole Genome Sequencing, PLoS ONE, vol.62, issue.6, p.23144841, 2012.
DOI : 10.1371/journal.pone.0047983.s001

URL : https://doi.org/10.1371/journal.pone.0047983

E. Shapiro, Prevention of Pneumococcal Infection With Vaccines An Evolving Story, Jama-Journal of the American Medical Association, vol.307, issue.8, pp.847-856, 2012.

M. Van-steenkiste, Pneumococcal vaccines: different types and their use in practice, J Pharm Belg, issue.1, pp.4-11, 2013.

J. Collard, A. Sanda, A. Jusot, and J. , Determination of pneumococcal serotypes in meningitis cases in Niger, PLoS One, vol.8, issue.3, p.23555971, 2003.

A. Roca, C. Bottomley, P. Hill, A. Bojang, U. Egere et al., Effect of Age and Vaccination With a Pneumococcal Conjugate Vaccine on the Density of Pneumococcal Nasopharyngeal Carriage, Clinical Infectious Diseases, vol.55, issue.6, pp.816-840, 2012.
DOI : 10.1093/cid/cis554

R. Adegbola, R. Deantonio, P. Hill, A. Roca, E. Usuf et al., Carriage of Streptococcus pneumoniae and Other Respiratory Bacterial Pathogens in Low and Lower-Middle Income Countries: A Systematic Review and Meta-Analysis, PLoS ONE, vol.197, issue.8, p.25084351
DOI : 10.1371/journal.pone.0103293.s010

Y. Cheung, S. Zaman, E. Nsekpong, C. Van-beneden, R. Adegbola et al., Nasopharyngeal Carriage of Streptococcus pneumoniae in Gambian Children who Participated in a 9-valent Pneumococcal Conjugate Vaccine Trial and in Their Younger Siblings, The Pediatric Infectious Disease Journal, vol.28, issue.11, pp.990-995, 2009.
DOI : 10.1097/INF.0b013e3181a78185

D. Weinberger, D. Bruden, L. Grant, M. Lipsitch, O. Brien et al., Using Pneumococcal Carriage Data to Monitor Postvaccination Changes in Invasive Disease, American Journal of Epidemiology, vol.178, issue.9, pp.1488-95, 2013.
DOI : 10.1093/aje/kwt156

URL : https://academic.oup.com/aje/article-pdf/178/9/1488/17341349/kwt156.pdf

M. Perilla, J. Illiot, and R. Facklam, Manual for the laboratory identification and antimicrobial susceptibility testing of bacterial pathogens of public health importance in the developing world, World Health Organization, 2003.

K. Mulholland and C. Satzke, Serotype replacement after pneumococcal vaccination, The Lancet, vol.379, issue.9824, p.1387, 2012.
DOI : 10.1016/S0140-6736(12)60588-1

D. Weinberger, R. Malley, and M. Lipsitch, Serotype replacement in disease after pneumococcal vaccination, The Lancet, vol.378, issue.9807, pp.1962-73, 2011.
DOI : 10.1016/S0140-6736(10)62225-8

URL : https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3256741/pdf

H. Rinta-kokko, R. Dagan, N. Givon-lavi, and K. Auranen, Estimation of vaccine efficacy against acquisition of pneumococcal carriage, Vaccine, vol.27, issue.29, pp.3831-3838, 2009.
DOI : 10.1016/j.vaccine.2009.04.009

L. Bere, J. Simpore, S. Karou, B. Zeba, A. Bere et al., Antimicrobial resistance and serotype distribution of Streptococcus pneumoniae strains causing childhood infection in Burkina Faso
URL : https://hal.archives-ouvertes.fr/pasteur-00757775

F. Ba, A. Seck, M. Ba, A. Thiongane, M. Cisse et al., Identifying an appropriate PCV for use in Senegal, recent insights concerning Streptococcus pneumoniae NP carriage and IPD in Dakar, Bmc Infectious Diseases, vol.14, 2014.

I. Adetifa, M. Antonio, C. Okoromah, C. Ebruke, V. Inem et al., Pre-Vaccination Nasopharyngeal Pneumococcal Carriage in a Nigerian Population: Epidemiology and Population Biology, PLoS ONE, vol.185, issue.1, 2012.
DOI : 10.1371/journal.pone.0030548.s001

URL : https://doi.org/10.1371/journal.pone.0030548

E. Usuf, C. Bottomley, R. Adegbola, and A. Hall, Pneumococcal Carriage in Sub-Saharan Africa???A Systematic Review, PLoS ONE, vol.28, issue.54, p.24465464, 2014.
DOI : 10.1371/journal.pone.0085001.s006

URL : https://doi.org/10.1371/journal.pone.0085001

M. Charvériat, M. Chomarat, M. Watson, and B. Garin, Nasopharyngeal Carriage of Streptococcus pneumoniae in healthy children, 2 to 24 months of age, in New Caledonia. Médecine et maladies infectieuses, pp.500-506, 2005.

P. Lagrange, Infections par Streptococcus pneumoniae : physiopathologie et r??ponses immunitaires, M??decine et Maladies Infectieuses, vol.24, issue.5, pp.927-965, 1994.
DOI : 10.1016/S0399-077X(05)80769-3

A. Brueggemann and B. Spratt, Geographic Distribution and Clonal Diversity of Streptococcus pneumoniae Serotype 1 Isolates, Journal of Clinical Microbiology, vol.41, issue.11, pp.4966-704966, 2003.
DOI : 10.1128/JCM.41.11.4966-4970.2003

URL : http://jcm.asm.org/content/41/11/4966.full.pdf

G. Lliyasu, A. Habib, and A. Mohammad, Antimicrobial Susceptibility Pattern of Invasive Pneumococcal Isolates in North West Nigeria, J Glob Infect Dis, vol.7, issue.2, pp.70-74, 2015.

J. Linares, C. Ardanuy, R. Pallares, and A. Fenoll, Changes in antimicrobial resistance, serotypes and genotypes in Streptococcus pneumoniae over a 30-year period, Clinical Microbiology and Infection, vol.16, issue.5, pp.402-412, 2010.
DOI : 10.1111/j.1469-0691.2010.03182.x

K. Klugman, The successful clone: the vector of dissemination of resistance in Streptococcus pneumoniae, Journal of Antimicrobial Chemotherapy, vol.50, issue.90003, pp.1-5, 2002.
DOI : 10.1093/jac/dkf500

J. E. Cornick, C. Chrispin, S. Harris, F. Yalcin, M. Senghore et al., Region-specific diversification of the highly virulent serotype1 Streptococcus pneumoniae, Microbial Genomics, vol.1, issue.2, pp.1-13, 2015.