"The novel coronavirus is the most 'cunning' virus I have ever seen in my 40 years in global health," Chan said.

Hong Kong's healthcare system and healthcare workers are already overwhelmed, Chan said, warning of "disastrous consequences" if the epidemic situation was downplayed and actions were delayed.

Hong Kong delegates to the National People's Congress, the nation's top legislature, and the CPCCC, the nation's top political advisory body, said in separate statements it is "necessary" move to postpone the election, which was expected to involve more than 4.45 million registered voters.

The NPC deputies said the decision was "sensible, reasonable and lawful" and reflected the high responsibility of the SAR government to prevent large crowds to mitigate the risk of infection in the community.

They also noted that if the election was held as scheduled, its fairness and credibility shall be questioned, because tens of thousands of voters living on the mainland or overseas could not return to vote in Hong Kong. Also, older voters may avoid casting votes.

A normal political campaign that allows candidates to explain views in public forums is also impractical because of epidemic prevention regulations.

Hong Kong CPPCC members said the decision to postpone the election reflected the Hong Kong government's principles of "respecting science, responding to public opinion and prioritize lives."

Hong Kong-based political commentator Nury Vittachi slammed the double standards of Western media's heavy criticism over Hong Kong's move to postpone its Legislative Council election because of the coronavirus pandemic. Vittachi said his view is Western media conveniently ignores the situation when other places have done the same or contemplated such plans, showing bias.

"More than 60 elections around the world are postponed because of the virus and Western media said nothing. But when Hong Kong wants to do the same thing, it's suddenly an outrage," said Vittachi.

Kennedy Wong Ying-ho, a freshman candidate of the import and export functional constituency, said that it would be difficult to run in the election as scheduled in the face of the growing epidemic as the candidates can hardly reach their voters who chose to stay at home to follow the social distancing measures.