when the cold-adapted a/leningrad/134/47/57 ( h2n2 ) strain was hybridized with epidemic a/brazil/11/78 ( h1n1 ) and a/bangkok/1/79 ( h3n2 ) strains , recombinants were isolated which are candidate vaccine strains for a live influenza vaccine for children .
C0042210
vaccine
C0042211
live