<3 months 3-36 months >36 months mois Total
Pre-vacine period (2004-2005) 6 (10.17%) 49 (83.05%) 4 (6.78%) 59 (100%)
Post-vaccine period (2007-2012) 1 (7.69%) 11 (84.62%) 1 (7.69%) 13 (100%)
Total 7 (9.72%)
7 (8,86%)
60 (83.33%)
66 (83,55%)
5 (6.94%)
6 (7,6%)
72 (100%)
79
Table 2: Proportion of Hib cases by age groups in pre- and post Hib conjugate vaccine introduction University Hospital, CHU-YO.