Match the correct term to the examples to apply your understanding of the three different types of epidemics. Point-source epidemic The potato salad at the company picnic was left out too long and later that night, 36 people experienced vomiting and diarrhea. Common-source epidemic The cantaloupes from a farm in Colorado sickened people with listeriosis over the course of several months. Propagated epidemic HIV has spread across the U.S. since the first diagnosis in the 1980s.