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quarantine – n. to put someone with a contagious disease alone until the disease ends
pandemic – n. the movement of a contagious disease across country lines
confidence – n. to be certain or sure of one's ability
globally -adj. worldwide
accurate – adj. to be correct in the small details
QR code – n. a quick-response code is a matrix on a computer-readable machine
eager – adj. to want to do something
certify – v. to say that something is legal and true
negative – adj. on the bad side
