Taiwan confirmed its first death from the COVID-19 virus on Sunday (Feb 16).
Health experts believe that if a person tests positive with the virus, he can infect 2.5 more people, raising an alarm of the virus's potency in spreading rapidly.
Analysts at Nomura again downgraded their China first-quarter economic growth forecast, to 3%, half the pace in the fourth quarter, and said there was a risk it could be even weaker.
The report said 9,419 infected patients had been discharged from hospital after recovery so far.
Though 1,716 healthcare workers were infected in the outbreak, 5 of them fatally, there is no evidence of super-spreader events in healthcare facilities caring for COVID-19 cases, the group wrote.
Cases seem to have been declining since February 1, but that could change as people return to work and school after the Chinese holidays, the report warns.
China also reported 142 more deaths, nearly all in Hubei, raising the mainland China death toll to 1,665.
But on Sunday, China's National Health Commission said a campaign to prevent and the control the disease was showing results.
Although new confirmed cases have declined in many of China's provinces, the country's leading epidemiologist Zhong Nanshan warned earlier that the outbreak may peak around late February and some mega cities like Beijing, Shanghai and Guangzhou still face the risk of more cases, as more and more residents return to work.
Fewer than 700 cases had been reported by 25 other countries, he said.
WHO's director-general Dr. Tedros Adhanom Ghebreyesus fears that if the current outbreak reaches and spreads in a country with a poor health system, it would be catastrophic.
"This trend must be interpreted very cautiously". Trends can change as new populations are affected.
But those who boarded the plane would have to endure another 14-day quarantine, this time at Travis Air Force Base in Fairfield, California or Lackland Air Force Base near San Antonio, Texas, when arriving back on United States soil.
On Sunday, seventy more passengers and crew on board the Diamond Princess cruise ship tested positive for the coronavirus.
The American evacuees will be housed at the Travis Air Force Base in California and the Joint Base San Antonio-Lackland in Texas. Those arriving were taken into a two-week quarantine.
More are expected before the official end of the quarantine period, after which Japanese officials said it would take two or three days for passengers to disembark, during which they will be tested once again.
But the USA cruise passengers were heading for Tokyo's Haneda Airport, Japanese test results showed that 14 had the virus. It's likely the coronavirus involved - Sars-CoV-2 - came from an animal, and it's suspected a live animal market in Wuhan is the original source but that has not been confirmed.
On the economic side, Hubei said that "companies should not resume production unless allowed by local epidemic prevention authorities".
"If we are going to disrupt every cruise ship in the world on the off chance that there might be some potential contact with some potential pathogen then where do we stop?" said Michael Ryan, head of WHO's health emergencies programme.