51.   The upgraded lab will be able to receive shipped samples containing the virus and conduct advanced research using techniques that require secure containment.

52.   To contain the virus, health officials slaughtered more than a million chickens in Hong Kong and blocked importation of chickens from nearby provinces in China.

53.   Veterinary authorities said the oysters contained a virus, but the specifics of the disease were not known, the Berlingske Tidende newspaper said.

54.   Authorities in the province were taking emergency measures, including closing schools, to contain the virus sparked by filthy streets, TASS said.

55.   The vaccines, given orally and for free over several doses, contain weakened virus to stimulate the production of human antibodies against the disease.