WILL YOU GET SICK FROM THE STAPH IN YOUR MEAT?

So now we suspect that Staphyloccus aureus bacteria and their toxins could be hiding in half the beef, pork, chicken and turkey we eat in America (see earlier blogs). So why aren't meat eaters getting sick more often?

The U.S. federal authorities estimate that this bacteria is only responsible for about 3 percent of foodborne illness. The meat industry (represented by the American Meat Institute) naturally says it is even less - about 1 percent. (You can do a lot of creative stuff with statistics, and as always, you can find some study or other to back up your case).

In fact, at least a quarter of us walk around with Staph bacteria up our noses, in our mouth or on our skin. Mind you, it's more likely to be one of the less dangerous Staph like Staphylococcus albus, but Staphylococcus aureus is sometimes there too.

But what about this Staphylococcus aureus in meat and other foods you eat? Will it make you sick?

Whether you get sick or not, will depend on a number of factors, including: i) which type of toxins the Staph bacteria produce (see earlier post which explains that toxins are what make you ill - not the Staph bacteria themselves); ii) how much of these toxins you ingest; and iii) who you are.

First, not all Staph produce dangerous enterotoxins such as Staphylococcal enterotoxin Type A or B, and your body can cope with small amounts in your burger or fried chicken, if you don't eat too much (Yet another reason to cut back on the size of your meat portion!).

Finally, whether you get symptoms of food poisoning will depend on how susceptible you yourself are. As always, some people are more vulnerable than others - young children, older adults, people with serious illnesses. I also came across an interesting study of illnesses caused by Staph toxins which found that people under stress are more susceptible than normal.

So don't stress out too much about Staph in your meat. Often there won't be enough toxins to hurt you. Besides, any stress just could make you more susceptible!

TSF

WILL COOKING MEAT PREVENT STAPH FOOD POISONING?

The American Meat Institute (AMI) obviously didn't like that study I mentioned in yesterday's post - the one that found that about half of America's meat was carrying Staphylococcus aureus bacteria, and about half of those bacteria in U.S. meat and poultry were resistant to several groups of antibiotics. Bad news all round for the industry, and not the kind that gets you more meat eaters, or increases profits of meat producers.

Naturally, the AMI immediately tried to both discredit the study and to reassure consumers. They said that the sample size used in the research study was too small. I agree, it was small, but even if the numbers of bacteria are a bit lower, they are still pretty unpleasant. To comfort its meat-eating public, the AMI said not to worry, because while the Staph bacteria that the study found were antibiotic-resistant, they were not heat-resistant, and could be killed by cooking your lunch or dinner to an appropriate temperature. Several other news releases on the topic have more or less said the same thing: "cook your meat well and you have nothing to worry about."

Not true. Let me explain why. Staphylococcus aureus can enter open wounds (even cuts so tiny that they are invisible) of people preparing the meat and cause dangerous infections - especially if the staph is one of the MRSA kind(the most antibiotic resistant, which two of my friends are struggling with).

As for staphylococcus food poisoning, some news for you people at AFI - and you should have known this: It is not the bacteria themselves that cause the illness. It is the enterotoxins they produce (including Staphylococcal enterotoxin A,B,C,D, and E). These toxins are fairly heat and freezing resistant. They can survive in your frozen burgers for as long as a year (if you keep them that long, which I wouldn't advise). As for being inactivated during cooking - the bacteria can be killed, but these toxins can survive and still make you ill after several minutes of cooking your meat at high temperatures.

So why isn't Staphylococcus aureus a more common cause of food poisoning?

Read the next post.

TSF