"The duties of medical workers at the front are indeed extremely heavy; their working and resting circumstances are limited, the psychological pressures are great, and the risk of infection is high", Mr Zeng said, as quoted by Reuters news agency. Forty-four new cases were reported there on Thursday, the Associated Press said.
The overall death toll due to coronavirus increased to 1,380 in China at the end of Thursday, with 63,851 confirmed cases, the commission said.
Meantime, the vulnerability of health workers responding to the epidemic was crystalized with other data emerging from China.
The patient was reportedly a woman in her 80s who was being treated at a hospital near Tokyo after she began developing symptoms on Feb 1.
Amid growing public anger over the handling of the crisis, the ruling Communist Party of China replaced two high-ranking officials in Hubei province, where coronavirus first emerged in late December in provincial capital Wuhan. "Some of these issues include easy to apply diagnostics, the best approaches for infection prevention, potential therapies that could be used to treat patients, existing vaccine candidates and how to accelerate them and how to address the infodemic", Adhanom added.
"Certainly the advice we're received externally from the World Health Organization is that there's no case for any contingency plans or cancelling the games or moving the games", said John Coates, the head of an International Olympic Committee inspection team.
"Based on what we know now, we believe this virus spreads mainly from person to person among close contacts, which is defined as about six feet, through respiratory droplets produced when an infected person coughs or sneezes", Dr. Nancy Messonnier, director of the National Center for Immunization and Respiratory Diseases, said during a media briefing on Friday.