Case Scenario: There has been a report that at a mine in your area, several mineworkers reported to the mine clinic, and nearby clinics having diarrhea. On close examination, there was a report of an end-of-year function, where food was served at the reception. The food included: pap (thick maize meal porridge), rice, meat, and salads of different types such as cabbage, potato salads, lettuce, beetroot chicken, and fruit salads. Beer, wine, and soft drinks were also served. You wonder if there was an outbreak. Answer the following questions: What steps would you take to investigate? What study design would you choose, and why? What measure/s of association would you calculate and why? What recommendations would you give after your investigations?