With the worsening outbreak of 2019 Novel Coronavirus (2019-nCoV) in China, Central Epidemic Command Center (CECC) pointed out that the recent cumulative total of confirmed cases of the novel coronavirus continues to grow in Wenzhou, Zhejiang province, China, and a total of 265 cases have been reported as of February 2, 2020; such was the highest number of any second-level administrative district in China outside Hubei province, which indicated that suspected community transmission might have occurred. Furthermore, Wenzhou city imposed restrictions on land transport and the movement of residents on February 2. Considering that there are regular direct flights to and from Wenzhou and frequent social exchanges between Taiwan and the city, CECC determined to list Wenzhou as Level 2 Area starting from February 3, according to the principles of epidemic levels for areas in China as published on February 1.

CECC also announced that travelers with a history of travel to Wenzhou City are subject to home quarantine when they enter Taiwan and that Wenzhou residents are prohibited from entering Taiwan. If fever or respiratory illness symptoms develop when travelers enter Taiwan, such travelers will be transferred to the designated healthcare facilities for sample collection and sent back home for quarantine. If such travelers test positive, they will be subject to compulsory quarantine according to the procedure of handling confirmed cases.