You have had all those who reported ill tested for Staphylococcal enterotoxin. Lab results indicate that 71 of those ill tested positive including the one visitor.

Question 8: In order to determine the source of the outbreak you will need to conduct either a case-control or cohort study. Which would be the appropriate choice for this outbreak?

UPDATE, Thursday, August 23^rd, 3pm

You have learned that there was a special "Speed Dating" event for single residents of the retirement community. The event was held outside by the pool and included a buffet. With the help of the Manager, you determine that 125 people attended the event. The visitor/outside person, that is ill did not attend the event. After conducting interviews, you discover that 60 of the total cases attended the speed dating event.

Question 9: calculate the risk ratio for those who attended. (show your work)

Question 10: calculate the odds ratio for those living in the residential community. (show your work)

Im hoping this helps. There are 500 residents in total. it started off with 36 people being sick then there was an additional 42 plus 1 visitor who became ill. That brought it 79 people being sick in total