From the linked article above, millions of people get infected by this each year. It just takes one mistake

Some 1.3 million Americans are sickened each year by eating salmonella-contaminated food, according to the U.S. Centers for Disease Control and Prevention. Most people have only mild symptoms, but others suffer diarrhea, nausea and vomiting. Roughly 19,000 people are hospitalized annually, and an estimated 420 die from the infected food.

Chicken and turkey account for nearly a quarter of all salmonella infections, according to a 2021 government report on food illness.