Skip directly to search Skip directly to A to Z list Skip directly to site content
CDC Home

Volume 18, Number 5—May 2012

Research

No Association between 2008–09 Influenza Vaccine and Influenza A(H1N1)pdm09 Virus Infection, Manitoba, Canada, 2009

Salaheddin M. MahmudComments to Author , Paul Van Caeseele, Gregory Hammond, Carol Kurbis, Tim Hilderman, and Lawrence Elliott
Author affiliations: University of Manitoba, Winnipeg, Manitoba, Canada (S.M. Mahmud, P. Van Caeseele, G. Hammond, T. Hilderman, L. Elliott); Winnipeg Regional Health Authority, Winnipeg (S.M. Mahmud, C. Kurbis); Cadham Provincial Laboratory, Winnipeg (P.V. Caeseele); Manitoba Health, Winnipeg (T. Hilderman, L. Elliott)

Main Article

Table 6

Demographic and clinical characteristics of case-patients and controls in a study of the association between the 2008–09 TIV and influenza A(H1N1)pdm09 virus infection, Manitoba, Canada, 2009*

Characteristic No (%) study participants, by age group, y
<12 12–19 20–34 35–44 45–­64 >65
Community controls
Total 381 (15.4) 242 (9.8) 553 (22.3) 384 (15.5) 638 (25.7) 281 (11.3)
Female sex 185 (48.6) 138 (57.0) 353 (63.8) 237 (61.7) 385 (60.3) 170 (60.5)
Chronic disease 30 (7.9) 21 (8.7) 57 (10.3) 74 (19.3) 203 (31.8) 163 (58.0)
Receipt of 2007–08 TIV 34 (8.9) 19 (7.9) 76 (13.7) 67 (17.4) 187 (29.3) 161 (57.3)
Receipt of 2008–09 TIV 53 (13.9) 20 (8.3) 80 (14.5) 72 (18.8) 179 (28.1) 160 (56.9)
Community case-patients
Total 180 (28.8) 105 (16.8) 154 (24.6) 76 (12.1) 102 (16.3) 9 (1.4)
Female sex 88 (48.9) 50 (47.6) 81 (52.6) 39 (51.3) 58 (56.9) 6 (66.7)
Chronic disease 9 (5.0) 15 (14.3) 17 (11.0) 13 (17.1) 29 (28.4) 7 (77.8)
Receipt of 2007–08 TIV 26 (14.4) 9 (8.6) 24 (15.6) 21 (27.6) 35 (34.3) 8 (88.9)
Receipt of 2008–09 TIV 24 (13.3) 10 (9.5) 20 (13.0) 15 (19.7) 34 (33.3) 6 (66.7)
Hospitalized case-patients
Total 68 (33.2) 21 (10.2) 44 (21.5) 25 (12.2) 37 (18.0) 10 (4.9)
Female sex 23 (33.8) 13 (61.9) 32 (72.7) 12 (48.0) 27 (73.0) 8 (80.0)
Chronic disease 17 (25.0) 5 (23.8) 10 (22.7) 13 (52.0) 25 (67.6) 8 (80.0)
Receipt of 2007–08 TIV 6 (8.8) 0 (0.0) 4 (9.1) 9 (36.0) 12 (32.4) 6 (60.0)
Receipt of 2008–09 TIV 9 (13.2) 3 (14.3) 4 (9.1) 5 (20.0) 14 (37.8) 4 (40.0)

*TIV, inactivated trivalent influenza vaccine.

Main Article

Top of Page

USA.gov: The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Rd. Atlanta, GA 30333, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 - Contact CDC–INFO