Table 2. Persistence of influenza vaccine-induced antibody.
| Vaccine Virus | 1 y | 2 y | 2.5 y | 3 y | ||||
|---|---|---|---|---|---|---|---|---|
| |
Healthy |
Transplant |
Healthy |
Transplant |
Healthy |
Transplant |
Healthy |
Transplant |
| 2006–07 A/New Caledonia H1N1 |
15/15 (100%) |
46/46 (100%) |
9/9 (100%) |
34/46 (74%) |
– |
– |
6/9 (67%) |
11/38 (29%) |
| 2007–08 A/Solomon Islands H1N1 |
23/23 (100%) |
46/46 (100%) |
18/23 (78%) |
30/46 (65%) |
8/21 (38%) |
12/34 (35%) |
– |
– |
| 2004–05 A/Wyoming H3N2 |
18/18 (100%) |
57/57 (100%) |
14/18 (78%) |
35/52 (67%) |
– |
– |
4/15 (27%) |
7/51 (8%) |
| 2007–08 A/Wisconsin H3N2 |
22/22 (100%) |
47/47 (100%) |
17/22 (77%) |
31/47 (66%) |
6/21 (29%) |
16/35 (46%) |
– |
– |
| 2004–05 B/Shanghai |
22/22 (100%) |
40/40 (100%) |
8/21 (38%) |
20/40 (50%) |
– |
– |
1/18 (6%) |
7/31 (23%) |
| 2007–08 B/Malaysia | 19/19 (100%) | 45/45 (100%) | 3/19 (16%) | 12/45 (27%) | 1/17 (6%) | 5/34 (15%) | – | – |
All between group comparisons not statistically significant by Fisher’s exact test. All between season comparisons statistically significant different by Fisher’s exact test except control 2006 A/New Caledonia year 1 vs. year 2 vs. year 3 and control and transplant 2007 B/Malaysia year 2 vs. year 2.5.