outbreak - n. a sudden start or increase of fighting or disease

dose - n. to have the food, liquid, etc., that is in your stomach come out through your mouth because you are sick

response - n. something that is done as a reaction to something else

modify - v. to change some parts of (something) while not changing other parts

immunization - n. the act of protecting someone from a disease

vomit - v. to have the food, liquid, etc., that is in your stomach come out through your mouth because you are sick

diarrhea - n. an illness that causes you to pass waste from your body very frequently and in liquid rather than solid form

transmit – v. to cause (a virus, disease, etc.) to be given to others

ring – n. something that forms a circle around something else

positive – adj. good or useful