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mild - adj. not strong in action or effect
symptom - n. a change in the body or mind which indicates that a disease is present
lesson - n. something learned through experience
quarantine - n. the situation of being kept away from others to prevent a disease from spreading
fund - n. an amount of money that is used for a special purpose
pandemic - n. an occurrence in which a disease spreads very quickly and affects a large number of people over a wide area
slum - n. an area where poor people live and the buildings are in bad condition
comfortable - adj. not causing any physically unpleasant feelings
