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. 2014 Sep;21(9):1282–1287. doi: 10.1128/CVI.00375-14

TABLE 4.

Comparison of the incidence of influenza-like illness between vaccinated and nonvaccinated study groupsa

Group No. of patients Influenza-like cases (%)
Vaccinated 122 2.5
Unvaccinated 104 8.7
a

χ2 = 4.285, P = 0.038.