Another reason to eat grass-fed beef
Although this isn’t really the season for an E. coli O157:H7 infection – such infections are most common in the summer and spring – a recent New York Times article (requires free registration) about the lengths to which slaughterhouses are going to eliminate such infections got me to thinking.
There are a couple of reasons we’ve had this plague visited upon us: we mistreat our beef cattle and we mistreat ourselves. There isn’t a whole lot we can do to deal with the mistreatment of cattle on a feedlot, but there is a lot we can do to keep from mistreating ourselves. Before we get into the steps we can take to protect ourselves from E. coli O157, let’s take a deeper look at where this bug comes from and what it does.
There are countless millions of harmless E. Coli bacteria in the digestive systems of cattle just as there are in our own. But when cows are fed on grain, which contains many more calories per pound than does grass or hay, they gain weight and fatten more quickly, and the conditions in their GI tracts changes to favor E. coli O157. If the cattle are ill or stressed – conditions common to a feedlot – they become even more susceptible. The first E. coli O157 infection was reported in 1982, which makes it likely that the bug mutated from a non-pathogenic E. coli around that time.
















