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sanitizer - n. substance used to thoroughly clean something from disease, infection, etc.
scan - v. to look a something using a special machine or device
quarantine - n. the situation of being kept away from others to prevent a disease from spreading
implement - v. to make something active or effective
contact-tracing - n. the action of monitoring infected people and notifying those who come in contact with them
epidemic - n. an occurrence in which a disease spreads very quickly and affects a large number of people
positive - adj. in medical, showing the presence of a particular germ, condition
