American citizens wave from a bus as they leave the quarantined Diamond Princess cruise ship at Daikoku Pier to be repatriated to the United States on Feb. 17, 2020 in Yokohama, Japan.

US officials have now confirmed 35 cases of novel coronavirus in the country, the US Centers for Disease Control and Prevention said Friday. These include 21 cases among repatriated individuals, as well as 14 US cases.

新型コロナウイルスについて知っておきたい20のこと（随時更新