中央流行疫情指揮中心今(18)日表示，全球疫情持續擴大，其中美國近期每日新增病例數逾千例，並有4州發生社區傳播；加拿大及澳洲每日新增病例數近百例，紐西蘭則與澳洲往來密切。美國及澳洲並已宣布全國或部分地區進入緊急狀態。基於國人至當地有感染風險，指揮中心宣布除已公布列第三級之美國華盛頓州、紐約州及加利福尼亞州外，自3月19日零時起提升美國、加拿大、澳洲及紐西蘭共4國(皆含轉機)旅遊疫情建議至「第三級」（警告：Warning），國人應避免至當地所有非必要旅遊，自第三級國家及地區入境者，需進行14天居家檢疫。另於台灣時間3月19日零時起，所有入境者需居家檢疫14天。

指揮中心截至今日已宣布(含未來生效)列入旅遊疫情建議第三級之國家共計97國1地區，包括中國大陸(含港澳)、中國大陸以外亞洲20國、中亞9國、申根國家26國、英國、愛爾蘭、東歐14國、中東16國及1地區、北非5國、美國、加拿大、紐西蘭及澳洲，另列入第三級國家係包括其海外屬地。

On March 18, the Central Epidemic Command Center (CECC) announced that the global coronavirus disease 2019 (COVID-19) outbreak has continued to expand. There have been more than 1,000 new cases per day in the United States, with four states experiencing community transmission, and more than 100 new cases per day in Canada and Australia, while New Zealand continues to maintain close ties with Australia. The US and Australia have also declared countrywide or regional states of emergency.

Given the risk of infection to Taiwanese nationals, effective March 19 the CECC will raise its travel notice for the US, Canada, Australia, and New Zealand, including for transit flights made through these countries, to Level 3: Warning. This comes in addition to the US states of Washington, New York, and California, which were already subject to a Level 3: Warning travel notice. Taiwanese nationals should avoid nonessential travel to these countries, and will be required to follow a 14-day period of home quarantine after returning from Level 3 countries and regions. Furthermore, effective March 19, all inbound travelers will be required to follow a 14-day period of home quarantine after entering Taiwan.

As of March 18, the CECC has raised its travel notice for 97 countries and one region to Level 3: Warning; namely, mainland China (including Hong Kong and Macao), 20 Asian countries, nine Central Asian countries, 26 Schengen countries, the United Kingdom, the Republic of Ireland, 14 Eastern European countries, 16 countries and one territory in the Middle East, five north African countries, the US, Canada, New Zealand, and Australia. The Level 3 travel notice also applies to dependent territories of these countries where applicable.