Final answer:
One precautionary measure to prevent an outbreak of Shigellosis is regular handwashing, rinsing fresh produce before eating, and thoroughly cooking food.
Step-by-step explanation:
One precautionary measure Patrick can follow to help prevent an outbreak of Shigellosis is to practice good hygiene, particularly in food handling. This includes regular handwashing before and after handling or preparing food and before eating. Handwashing is one of the most effective defenses against the spread of foodborne diseases, including Shigellosis. Additionally, it is important to rinse fresh produce before eating, especially if it is to be eaten raw, as the surface of the produce can be contaminated with harmful bacteria. Thoroughly cooking food, particularly meat, to an internal temperature of at least 74 degrees C (165 degrees F) can also help kill any bacteria it may contain.