quarantine - n. to keep (a person or animal) away from others to prevent a disease from spreading : to put or keep (a person or animal) in quarantine

self-isolate - v. to keep yourself apart from others

tourist - n. a person who travels to a place for pleasure

pandemic - n. an occurrence in which a disease spreads very quickly and affects a large number of people over a wide area or throughout the world

upset - adj. angry or unhappy

citation - n. an official order to appear before a court of law

stable - adj. in a good state or condition that is not easily changed or likely to change

let down one's guard - idiom. to lower one's level of caution or carefulness