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