Rumours of possible human cases in neighbouring countries are also being closely monitored.

对邻近国家可能发生人间病例的流言也正在严密监测。

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Centre for health Protection controller Thomas Tsang Ho-fai said the health of traders is being closely monitored.

卫生防护中心总监曾浩辉表示他们正密切关注商贩的健康状况。

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However more than 160 people who have had contact with the individuals are being closely monitored.

BBC: China: Four more infected with H7N9 bird flu

Administrator Lubchenco discussed the potential for severe weather in the Gulf, which is being closely monitored.

WHITEHOUSE: The White House

But it said that more than 500 "close contacts" of the 18 people infected were being closely monitored.

BBC: China closes Nanjing market over H7N9 bird flu