Document Classification

Section Type: RESULTS

Text: Seroconversion rates were higher after the adjuvanted split virion vaccine than after the whole virion vaccine, most notably in the youngest children (163 of 166 participants with paired serum samples (98. 2 %, 95 % confidence interval 94. 8 % to 99. 6 %) v 157 of 196 (80. 1 %, 73. 8 % to 85. 5 %), P < 0. 001) in children under 3 years and 226 of 228 (99. 1 %, 96. 9 % to 99. 9 %) v 95. 9 %, 92. 4 % to 98. 1 %, P = 0. 03) in those over 3 years).