How does housefly harm?

Houseflies can harm human health by carrying and spreading pathogens that cause diseases. They often land on decaying organic matter and feces, picking up bacteria, viruses, and parasites that can contaminate food and surfaces. This transmission can lead to illnesses such as gastroenteritis, food poisoning, and other infections. Additionally, their presence can be a nuisance and indicate unsanitary conditions in environments where they thrive.