An outbreak of a pathogen-caused illness occurs in a small neighborhood in a big city. Which of the following should investigators confirm first? The water supply is not contaminated. The illness is not

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asked Jun 23, 2021 119k views

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An outbreak of a pathogen-caused illness occurs in a small neighborhood in a big city. Which of the following should investigators confirm first?

The water supply is not contaminated.
The illness is not carried by insects.
The infected people's homes are clean.
The infected people are not genetically similar.