epidemic influenza occurred only in the two groups of conscripts : the incidence of serologically verified influenza was 66 % and 83 % in the groups that received placebo and 43 % and 51 % in the groups that received amantadine , giving protection rates of 36 % ( p = 0.05 ) and 39 % ( p = 0.001 ) .
C0021400
influenza
C0002403
amantadine