Twenty one days after the second dose, a 4-fold increase in serum neutralising antibody titres was obtained in 77.1% of subjects against the A/ Indonesia/ 5/ 2005 strain, in 75.0% of subjects against A/ Anhui/ 01/ 2005 and in 85.0% of subjects against A/ Turkey/ Turkey/ 1/ 2005.
Kakskümmend üks päeva pärast teise annuse manustamist täheldati seerumi neutraliseerivate antikehade 4- kordset tiitri tõusu A/ Indonesia/ 5/ 2005 suhtes 77, 1% - l, A/ Anhui/ 01/ 2005 suhtes 75, 0% - l ja A/ Turkey/ Turkey/ 1/ 2005 suhtes 85, 0% - l isikutest.