Travellers from countries with severe coronavirus outbreaks who arrive in some parts of China will have to undergo a 14-day quarantine, state media say.
Travellers from the virus hotspots of South Korea, Japan, Iran and Italy arriving in the capital will have to be isolated, a Beijing official has said.
Shanghai and Guangdong announced similar restrictions earlier.
Authorities are worried the virus might be imported back into the country.
Although most virus deaths have been in China, Monday saw nine times more new infections outside China than in.
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Shanghai said it would require new arrivals from countries with "relatively serious virus conditions" to be isolated, without naming the countries.
Authorities are also asking overseas Chinese to reconsider travel plans.
"For the sake of your family's health and safety, please strengthen your precautions, carefully decide on your travel plans and minimise mobility," officials in one southern Chinese province said.
China reported 125 new virus cases on Tuesday – the lowest number of new daily infections in six weeks. There were also 31 more deaths – all in Hubei province, where the virus emerged.
In other developments:
- Finance ministers from the G7 countries are to have a conference call at 12:00 GMT to discuss the economic impact of coronavirus
- The Pope, who had cancelled a Lent retreat for the first time in his papacy because he was suffering from a cold, has tested negative for the virus, Italian media report
- South Korean President Moon Jae-in has put the country into what he calls a "state of war" to tackle the spread of the virus. He has ordered all government departments to shift to a 24-hour emergency system to handle the outbreak
- Jailed British-Iranian woman Nazanin Zaghari-Ratcliffe is in good health, a spokesman for Iran's judiciary has said. She was assessed after her husband said she was showing symptoms of the coronavirus
- Japan's Olympic minister says the Tokyo 2020 Games could be postponed from the summer until later in the year amid fears over the outbreak. BBC Sport is keeping track of all events that are affected.
- In the UK, where there are 39 confirmed cases, the government has warned that up to a fifth of the workforce may be off sick during the peak of a coronavirus epidemic
What's the latest?
There are now almost 90,000 cases worldwide in about 70 countries, although the vast majority – just under 90% – remain in China, and most of those are in Hubei province where the virus originated late last year.
Of the nearly 8,800 cases outside China, 81% are in four countries – Iran, South Korea, Italy and Japan.
One of the countries worst affected outside China – Italy – said on Monday that the death toll there had risen by 18 to 52. There Read More – Source