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

Table 3 Efficacy of influenza vaccination: seroconversions or fourfold titre rises.

SLE (n = 56) Healthy controls (n = 17) p Value
A/H1N1 24 (43%) 16 (94%) <0.001
A/H3N2 22 (39%) 15 (88%) 0.001
B/Hong Kong 23 (41%) 12 (71%) 0.051

Fisher's exact test was used for all variables.

SLE, systemic lupus erythematosus.