Health officials in protective suits transport sacks of poultry as part of preventive measures against the H7N9 bird flu at a poultry market in Zhuji, Zhejiang province January 6, 2014. REUTERS/Stringer
LONDON (Reuters) - A wave of H7N9 bird flu cases and deaths in China since the start of 2014 shows emerging flu strains need constant surveillance if the world is not to be caught off guard by a deadly pandemic.
At least 24 H7N9 flu infections and three deaths have been confirmed in the past week by the World Health Organisation (WHO), a big increase on the two cases and one death reported for the four-month period of June to September.
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