outbreak – n. the sudden or violent start of something, such as the spreading of disease

otherwise – adv. in a different way

sewage – n. wastewater and human waste products

monitor – v. to watch or observe something

detect – v. to discover or notice the presence of (something that is hidden or hard to see, hear, or taste)

anonymously – adv. not named or identified; made or done by someone unknown

sample – n. a small part of piece meant to show or represent what the whole is like