Table 7

 Influence of immunosuppressive drug treatment on vaccination efficacy: titres ⩾40 to influenza

No drug treatment (n = 12)Hydroxychloroquine (n = 17)Azathioprine (n = 13)Prednisone (n = 14)p Value
Fisher’s exact test was used for all variables.
A/H1N1 ⩾40 before vaccination6 (50%)8 (47%)7 (54%)6 (43%)0.982
A/H1N1 ⩾40 after vaccination11 (92%)14 (82%)9 (69%)13 (93%)0.396
A/H3N2 ⩾40 before vaccination8 (67%)11 (65%)7 (54%)9 (64%)0.929
A/H3N2 ⩾40 after vaccination12 (100%)16 (94%) 8 (62%) 12 (86%) 0.030
B/Hong Kong ⩾40 before vaccination5 (42%)2 (12%)4 (31%)3 (21%)0.295
B/Hong Kong ⩾40 after vaccination11 (92%)12 (71%)8 (62%)8 (57%)0.226