Which of the following is most correct? a. A service

SHIGELLA CASE STUDY An epidemiologist was working at Ellis County Public Health in the Fall of 2018. He had access to a fully functional medical laboratory in the health department. One day, he received a call from the lab informing him that they had received positive test results for Shigella from three separate patients two days ago. His population base, (called “catchment area” in public health) was 136,000 (there were 136,000 people in the area for which he was responsible). He looked at the regional statistics for the previous year and found that there were normally about five cases of shigella per year. It was October 16th.

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