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positive – adj. showing the presence of a particular germ, condition, or substance
grave – adj. very serious
flexible – adj. willing to change or to try different things
zone – n. an area that is different from other areas in a particular way
access – v. a way of being able to use or get something
negative – adj. not showing the presence of a particular germ, condition, or substance
pneumonia – n. a serious disease that affects the lungs and makes it difficult to breathe
resource – n. a supply of something (such as money) that someone has and can use when it is needed
surgeon – n. a doctor who performs operations that involve cutting into someone's body in order to repair or remove parts
lockdown – n. a state of isolation or restricted access launched as a security or health measure
