Answer:
Restaurants and catering or banquet facilities.
Step-by-step explanation:
The disease outbreak might occur due to the airborne, water borne or food borne disease. The food borne disease affects the individual health if individual eats the food affected with pathogens.
The disease outbreak illnesses might occur when more than two disease is caused by the same pathogens. The restaurants or banquet halls may cause harmful disease if the food is not prepared with the cleanliness and the presence of pathogen in the food.
Thus, the answer is restaurants and catering or banquet facilities.