Chiron Corp. has entered into a supply contract with the UK government for pre-pandemic influenza vaccine for a stockpile based on the H5N1 avian flu virus strain. Health authorities have identified H5N1 avian influenza as a strain with pandemic potential. Under the UK contract, Chiron has agreed to supply the British government with H5N1 avian flu vaccine containing Chiron’s MF59 adjuvant. Delivery of the stockpile remains subject to internal and regulatory release procedures. The UK...