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China shut part of the Great Wall and suspended public transport in 10 cities, stranding millions of people at the start of the Lunar New Year holiday on Friday as authorities rush to contain a virus that has killed 26 people and infected more than 800.
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People wearing face masks walk under a canopy decorated with spinning colored fans for a canceled Lunar New Year temple fair at Longtan Park in Beijing
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The World Health Organisation (WHO) has declared the new coronavirus an "emergency in China" but stopped short of declaring it of international concern.
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While restrictions on travel and gatherings have already been imposed to curb the outbreak, China will take stricter and more targeted measures, state television reported citing a State Council meeting on Friday, but gave no further details.
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Most of the cases and all of the deaths have been in China, but it has also been detected in Thailand, Vietnam, Singapore, Japan, South Korea, Taiwan, Nepal and the United States.
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The US Centers for Disease Control and Prevention said on Friday it had 63 patients under investigation, with two confirmed cases. Britain held an emergency response meeting.
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As of Thursday, China's National Health Commission said there were 830 confirmed cases and 26 people had died.
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Most cases have been in Wuhan, where the virus is believed to have originated in a market that traded illegally in wildlife. Preliminary research suggested it crossed to humans from snakes.
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China has advised people to avoid crowds and 10 cities in the central province of Hubei, where Wuhan is located, have suspended some transport, the Hubei Daily reported.
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The week-long celebrations to welcome the Year of the Rat began on Friday, raising fears the infection rate could accelerate as hundreds of millions of people have already travelled to see family at home and abroad.
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Wuhan, a city of 11 million, and neighbouring Huanggang, a city of 7 million, were in virtual lockdown. Nearly all flights at Wuhan's airport had been cancelled. Airports worldwide have stepped up the screening of passengers from China.
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Some temples have also closed, including Beijing's Lama Temple where people make offerings for the new year, have also been closed as has the Forbidden City, the capital's most famous tourist attraction.
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Shanghai Disneyland will close from Saturday. The theme park has a 100,000 daily capacity and sold out during last year's new year holiday. Film premieres have also been postponed and McDonald's suspended business in five cities in Hubei province.
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The WHO said on Thursday it was a "bit too early" to designate the outbreak a public health emergency of international concern, which would require countries to step up their response.
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The virus is expected to dent China's growth after months of economic worries over trade tensions with the United States, unnerving foreign companies doing business there.
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