by 3 months postvaccination , serum igg and nasal iga ha antibody titers remained elevated above prevaccination levels in 50 and 17 % , respectively , of the inactivated-virus vaccinees and in 46 and 23 % , respectively , of recipients of both vaccines but in only 19 and 7 % , respectively , of the live-virus and systemic antibodies , if vaccinees .
C2825347
iga
C0003241
antibodies