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. 2005 Dec 1;65(7):913–918. doi: 10.1136/ard.2005.043943

Table 6 Influence of immunosuppressive drug treatment on vaccination efficacy: seroconversions or fourfold titre rises.

No drug treatment (n = 12) Hydroxychloroquine (n = 17) Azathioprine (n = 13) Prednisone (n = 14) p Value
A/H1N1 7 (58%) 7 (41%) 4 (31%) 6 (43%) 0.619
A/H3N2 7 (58%) 8 (47%) 1 (8%) 6 (43%) 0.041
B/Hong Kong 7 (58%) 8 (47%) 3 (23%) 5 (36%) 0.316

Fisher's exact test was used for all variables.