Volume 17, Number 7—July 2011
Research
Effectiveness of Seasonal Influenza Vaccine against Pandemic (H1N1) 2009 Virus, Australia, 2010
James E. Fielding
, Kristina A. Grant, Katherine Garcia, and Heath A. Kelly
, Kristina A. Grant, Katherine Garcia, and Heath A. Kelly
Table 1
Participants in negative-test case–control study of efficacy of seasonal influenza vaccine for preventing pandemic (H1N1) 2009, Australia, 2010
| Participants | Age group, y |
Total, n = 319 | ||||
|---|---|---|---|---|---|---|
| 0–4, n = 19 | 5–19, n = 73 | 20–49, n = 181 | 50–64, n = 41 | >65, n = 5 | ||
| Controls | ||||||
| Total* | 13 (68) | 27 (37) | 107 (59) | 28 (68) | 5 (100) | 180 (56) |
| Vaccinated with monovalent vaccine† | 0 | 3 (11) | 7 (7) | 1 (4) | 0 | 11 (6) |
| Vaccinated with seasonal vaccine† | 0 | 0 | 9 (8) | 10 (36) | 2 (40) | 21 (12) |
| Vaccinated with both vaccines† |
0 |
0 |
7 (7) |
4 (14) |
2 (40) |
13 (7) |
| Pandemic (H1N1) 2009 case-patients | ||||||
| Total* | 6 (32) | 46 (63) | 74 (41) | 13 (32) | 0 | 139 (44) |
| Vaccinated with monovalent vaccine† | 0 | 3 (7) | 3 (4) | 0 | 0 | 6 (4) |
| Vaccinated with seasonal vaccine† | 0 | 2 (4) | 2 (3) | 0 | 0 | 4 (3) |
| Vaccinated with both vaccines† | 0 | 0 | 2 (3) | 0 | 0 | 2 (1) |
*No. (%) study participants.
†No. (%) controls/pandemic (H1N1) 2009 case-patients.
Page created: August 18, 2011
Page updated: August 18, 2011
Page reviewed: August 18, 2011
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.