Salmonella infects millions worldwide each year, causing fever, stomach cramps, and diarrhea. And these effects can be extreme: Salmonella is the leading cause of hospitalizations and deaths from food poisoning. So, how does it spread from chickens to humans? And how does it make us sick? Emma Bryce follows the journey of this crafty pathogen from farm to plate. Lesson by Emma Bryce, directed by Denys Spolitak.