Frank goes to the bathroom while waiting on his customers. He doesn't "have time" to wash his hands, so he delivers the cheeseburger anyways. The customer eating this cheeseburger is likely to get shigella.
The optimal temperature is 37F, and it needs a lot of oxygen to survive and can thrive in anything that's moist and warm. Shigella reproduces by binary fission. Shigellosis is caused by Shigella.
The customer will likely have watery diarrhea, nausea, vomiting, a fever, and abdominal cramping.
Shigellosis symptoms will last from 3-7 days.
A consumer can get shigella from anything that uses a lot of hand contact to make, such as sandwiches or salads.
To prevent shigella, Mayo Clinic suggests to "wash hands often" and "not prepare food while you have diarrhea." Both are great ideas.