Lavieren, R.F. van

virus animal infection group challenge vaccine control antibody fluenza vaccination vaccinated <1.29 inoculation strain influenza hpaiv titer ef ficacy <1.42 sample <0.3 table vaccinated cats study zanamivir smallpox figure macaque response tissue heterologou control animals h 5n infection virus antigen expression genome fluenza virus model rt-pcr species appendix panel ficacy influenza virus pharyngeal protection /1/00 excretion 0.00 signi antigen <0.9 vaccinate van den hoogen temperature clade pochard disease level assay lineage vector tufted ducks smallpox vaccines pharyngeal swabs virus isolation indonesian strain tufted weight loss throat osterhau weight plasma vaccinia isolation <0.7 /vietnam genome copy numbers 107 tcid 50 metapneumoviru virol