The US government purchased from Sanofi Pasteur and Chiron Corporation several million doses of vaccine meant to be used in case of an influenza pandemic due to H5N1 and is conducting clinical trials on them [REF].
"To address the H9N2 threat, NIAID contracted with Chiron Corporation to produce investigational batches of an inactivated vaccine, which will be evaluated clinically by NIAID early next year.