Is food that has been crawled on by cockroaches toxic?
Aug 21, 2021
Source: Cainiu Health
Dr. Xiao Xiao
Introduction
Cockroaches are commonly found in garbage dumps, toilets, and similar locations; their role in transmitting intestinal diseases and parasitic eggs cannot be overlooked. The bacteria and viruses they carry pose significant health risks to humans. Cockroaches have been confirmed to harbor over 40 species of pathogenic bacteria affecting vertebrates; therefore, any food they have crawled across must not be consumed. Additionally, surfaces they have traversed should be thoroughly disinfected.
People’s aversion to—or even fear of—cockroaches stems not only from their appearance. These insects are highly adaptable, thriving in unsanitary environments such as garbage dumps and toilets, yet they also readily forage on food.
Consequently, their role in transmitting intestinal diseases and parasitic eggs cannot be overlooked. The bacteria and viruses they carry pose significant health hazards to humans. Cockroaches have been confirmed to harbor over 40 pathogenic bacterial species affecting vertebrates, including Mycobacterium leprae (the causative agent of leprosy), Shigella species (responsible for bacillary dysentery), and Parashigella species (associated with infantile diarrhea), among others.
They also carry Escherichia coli, which causes urinary, genital, and gastrointestinal infections, as well as various Salmonella species that induce gastrointestinal infections. Therefore, any food a cockroach has crawled across must never be consumed, and surfaces it has contacted should be thoroughly disinfected.
