Bacteria can travel in the digestive system of a housefly for how many weeks?

Bacteria can indeed travel in the digestive system of a housefly for an extended period, typically around four weeks. This duration is significant as it highlights the potential for houseflies to act as vectors for disease transmission. The ability of bacteria to survive and transit through the fly's digestive system allows for contamination of food and surfaces, posing a public health risk. This characteristic of houseflies is crucial for understanding the dynamics of foodborne illnesses and the importance of sanitation practices to mitigate these risks. The knowledge that bacteria can persist for four weeks within the digestive tract is invaluable for environmental health specialists and sanitarians in developing effective control measures.