The area around the clinic was cordoned off and health officials there wore protective gear.

Messaging services lit up with false rumours that a MERS case had been confirmed in Hong Kong and surgical masks reportedly sold out in shops around the station.

Residents in Hong Kong are particularly sensitive after an outbreak of Severe Acute Respiratory Syndrome (SARS) killed 299 people in the city in 2003.
"Of the 33 suspected cases of MERS that we received yesterday (Wednesday) up to noon, 31 have tested negative," said Leung Ting-hung, controller for the centre of health protection, including the Tsing Yi case.

Local media reported that further cases were being tested overnight.

Leung did not give details of the two outstanding cases still being tested as the results could take 24 hours.

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