Table 1: Number of cases of Haemophilus influenzae type b infection reported from 1985 to 1994 by 10 centres across Canada participating in the Immunization Monitoring Program, Active (IMPACT)
Year; no. of cases
Centre 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 Total
Dr. Charles A. Janeway Child Health Centre, St. John's 17 17 14 6 9 6 7 5 3 0 84
Izaak Walton Killam Hospital for Children, Halifax* 76 68 67 36 52 43 7 4 6 1 360
Centre hospitalier de l'Université Laval, Ste-Foy 16 27 15 15 12 6 13 8 3 1 116
Montreal Children's Hospital 63 52 49 40 21 17 10 13 3 3 271
Hôpital Sainte-Justine, Montréal 60 54 67 56 53 44 30 27 6 4 401
Children's Hospital of Eastern Ontario, Ottawa* 43 40 37 19 21 13 10 5 2 1 191
Hospital for Sick Children, Toronto* 64 44 38 37 45 32 27 12 1 2 302
Children's Hospital of Winnipeg* 56 20 27 35 20 21 36 18 9 4 246
Alberta Children's Provincial General Hospital, Calgary 51 57 45 26 20 16 8 6 0 4 233
British Columbia Children's Hospital, Vancouver 39 34 39 30 28 20 15 15 8 4 232
Total 485 413 398 300 281 218 163 113 42 24 2436
*Case-finding for 1985-90 was based on microbiology laboratory records, which possibly resulted in an underestimation of the total numbers.

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