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(A) Timing of vaccine treatments for LAIV (live-attenuated influenza virus), KV (killed virus), or NV (sham) swine groups leading up to intranasal challenge with H3N2 subtype IAV (H3 human-like; 3.2010.1). (B) Timeline of animal (pig, near-exposed [NE] ferret, far-exposed [FE] ferret) nasal sample collection, study room air sample collection, and pig-ferret contact occurring for each swine group (LAIV, KV, and NV).
