Iron pills: Iron pills can affect digestive system & cause nausea or upset stomach, but not the other symptoms you described, unless you are taking the iron on full stomach, as food can lower absorption of iron, hence less effectiveness for your anemia, hence one possibility is that your anemia might be causing those symptoms. ...Read more.
Investigation procedures should follow those outlined in the IAMFES Procedures to Investigate Foodborne Illness book: 1  Case history interviews Collect additional case history information to supplement any previously collected information. 2  Evaluation of the foodservice establishment.
What steps are needed in an outbreak investigation? The CDC has provided a list of 10 steps used by epidemiologists for investigating outbreaks. They implement these methods to optimize the speed and accuracy of outbreak investigations in order to ensure the safety and health of the population. Prepare for field work.