After a "small number of positive cases" of Covid-19 were detected aboard a Carnival Cruise Line ship, a new fleetwide mask policy requiring all guests to wear masks in some indoor areas was implemented ahead of schedule, the cruise line said.
원문출처 : https://www.cnn.com/travel/article/carnival-cruise-line-covid-cases-mask-requirement/index.html
원문출처 : https://www.cnn.com/travel/article/carnival-cruise-line-covid-cases-mask-requirement/index.html