Is food that has been crawled on by cockroaches toxic?
Sep 03, 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 pests are highly adaptable, thriving in unsanitary environments such as garbage dumps and toilets, yet they also readily forage on human food. Consequently, their role in transmitting intestinal diseases and parasitic eggs cannot be overlooked. The bacteria and viruses carried by cockroaches pose significant health risks to humans. Cockroaches have been confirmed to harbor over 40 species of pathogenic bacteria affecting vertebrates, including *Mycobacterium leprae* (the causative agent of leprosy), *Shigella* species (responsible for bacillary dysentery), and *Parashigella* species (associated with infantile diarrhea). They also carry *Escherichia coli*, which can cause urinary, reproductive, and gastrointestinal infections, as well as multiple *Salmonella* strains that induce gastrointestinal infections. Therefore, any food a cockroach has crawled across must never be consumed, and all surfaces it has contacted should be thoroughly disinfected.
