Food-Borne Infections Beyond the possibility that it may chip away at our longevity by contributing to heart disease and cancer, meat can also pose the much more immediate hazard of caus
Trang 1Food-Borne Infections
Beyond the possibility that it may chip away
at our longevity by contributing to heart
disease and cancer, meat can also pose the
much more immediate hazard of causing
infection by disease microbes This problem remains all too common
Bacterial Infection Exactly because it is a
nutritious material, meat is especially vulnerable to colonization by microbes, mainly bacteria And because animal skins and digestive tracts are rich reservoirs of bacteria, it’s inevitable that initially clean meat surfaces will be contaminated during slaughter and the removal of skin, feathers, and innards The problem is magnified in standard mechanized operations, where carcasses are handled less carefully than they would be by skilled butchers, and where a
Trang 2single infected carcass is more likely to contaminate others Most bacteria are harmless and simply spoil the meat by consuming its nutrients and eventually generating unpleasant smells and a slimy surface A number, however, can invade the cells of our digestive system, and produce toxins to destroy the host cells and defenses and to speed their getaway from the body The two most prominent causes of serious
meat-borne illness are Salmonella and E coli.
Salmonella, a genus that includes more
than 2,000 distinct bacterial types, causes
more serious food-borne disease in Europe and North America than any other microbe, and appears to be on the rise It’s a resilient group, adaptable to extremes of temperature, acidity, and moisture, and found in most if not all animals, including fish In the United
States it’s especially prevalent in poultry and eggs, apparently thanks to the practices of
industrial-scale poultry farming: recycling