Warning: Ground Beef Alert

Food poisoning is a very serious illness. While healthier adults usually get over it in a day or two, children, older adults and anyone with a compromised immune system can end up with life-threatening symptoms. Some cases of food poisoning are easier to trace back to their source than others, but one thing is for sure — the consumption of ground beef is a huge risk factor.

Quick Read:

Ground beef can contain several times more illness-causing bacteria than solid cuts of meat. Bacteria most commonly associated with food poisoning and found in ground beef are staphylococcus aureus, salmonella, enterococcus, clostridium perfringens, and seven strains of E. coli. Sustainably farmed cattle are less likely to harbor these bacteria, and even less likely to spread antibiotic-resistant infections, than traditionally farmed cattle.

Read This Warning Before You Eat Your Next Hamburger.


The Hidden Dangers

While most fast food joints don’t give you the option, it’s not uncommon for people to order a rare steak at a restaurant. While it’s true people eat undercooked beef all the time without getting sick, far too many people assume all cuts of beef are equally safe. For a handful, this assumption has proven deadly.

One study collected a total of 458 pounds of ground beef from a variety of growers and tested them for the most common food poisoning culprits: salmonella, staphylococcus, aureus, enterococcus, clostridium perfringens, and seven strains of E. coli.

All of the samples tested positive for at least some level of fecal contamination. About 20 percent of them contained C. perfringens, which is responsible for about a million cases of food poisoning each year. Ten percent tested positive for S. aureus, and one percent tested positive for salmonella.

Increased Risks

Here’s the problem. While there are tons of different types of bacteria living on the surface of meat, most can be killed when the surface is heated to a high enough temperature. There are exceptions, though. For example, the S. aureus bacteria produces a toxin that will make you sick no matter how long you cook it.


The problem with ground beef, specifically, is the bacteria-laden “surface” ends up mixed throughout the meat, no longer just on the exterior. One sick cow can contaminate numerous packages of meat, leaving bacteria behind on equipment as well. As a result, the bacteria end up reproducing in areas that will never even touch a frying pan. At the end of the day, that means a medium-rare burger is not nearly as safe to eat as a cut of steak cooked to the same internal temperature.

The Source Matters

The study we looked at also scrutinized the role farming practices had in meat safety, comparing the bacteria collected from antibiotic-treated cattle with those that had been sustainably farmed. The found “conventionally” farmed beef typically had more bacteria, and that those bacteria were more likely to be resistant to antibiotics. In fact, 18 percent of the conventional samples tested positive for superbugs compared to nine percent of sustainably farmed beef. Three even contained the S. aureus strain responsible for MRSA, an antibiotic-resistant form of staph.

No matter where you shop for meat, the risk of contamination will always exist. You can reduce your chances of getting food poisoning by always heating your hamburgers to an internal temperature of 160 degrees Fahrenheit. For added protection, buy your meat in solid cuts and consider grinding it a home and cooking it fresh.