Was that last 24 Hour “Bug” You Had Really a Foodborne Illness in Disguise?

Within this blog, I have discussed many foodborne pathogens: E. coli, Hepatitis, Salmonella, Listeria monocytogenes, and Campylobacter.  But we’ve somehow managed to omit Staphylococcus aureus (S. aureus).

It isn’t that it is any less important than the others we have discussed. S. aureus causes a wide variety of infections, from skin infections to diseases that can be potentially fatal.  And while it isn’t among the top foodborne illnesses in the United States, estimates indicate that S. aureus causes just less than 250,000 illnesses in the United States each year.  It should be noted through, that these incidences may be much higher than estimated due to non-reports of the illness.

S. aureus can grow in a wide range of temperatures, from 44°F to 119°F and while most pathogens thrive in moist environments, S. aureus has the ability to survive dry and otherwise stressful instruments, such as the human nose and skin, and even on clothing and other surfaces.

The formation of these toxins is one reason why cooking the food will be of no use in protecting yourself or your guests.

Symptoms of S. aureus include nausea, vomiting, stomach cramps, and in most cases, diarrhea. Symptoms can begin as little as 30 minutes after consuming a food or beverage item contaminated with S. aureus but can sometimes take as long as 8 hours to manifest in symptoms. These symptoms usually last for no longer than 24 hours and rarely result in severe illness.

Does this sound like the last “24-hour” bug you or your children may have had?  This is one of the reasons why it is believed that the incidence of S. aureus is much higher than estimated, most simply do not visit a medical professional who can diagnose S. aureus.

The reason why S. aureus can make someone ill so quickly is because of the nature of the bacteria.  In the case of an S. aureus illness, the bacteria may have multiplied on the food since the time the food came into contact with the host food item. These bacteria then leave behind a toxin on the food, which is what causes the illness.  For example, think of a food that might have a cleaning chemical on it – it would make you sick very quickly after ingesting the item.

The formation of these toxins is one reason why cooking the food will be of no use in protecting yourself or your guests. Yes, cooking the product will eliminate the S. aureus bacteria, but it does not eliminate the toxin that the bacteria left behind.

Food items commonly implicated in S. aureus illnesses include milk and cheeses, but other food products that have been implicated in such illnesses include cold salads, sliced deli meats, sandwiches, cream-filled pastries, and puddings.

S. aureus is just one of the reasons why it is important to pay attention to safe food handling throughout the entire life of a product. Avoiding cross contamination, ensuring proper personal hygiene (unlike the sushi chef picture we used for the blogs – did you notice they were not wearing gloves?), and storing food at proper temperatures are key steps in protecting your operation from a S. aureus outbreak (and almost all other foodborne illnesses). Risk Nothing. 

The Physical Elements of Food Service Hand Hygiene – Part I

September is National Food Safety Education Month and the theme has a rhyme to it – “Keep Hands Clean with Good Hygiene”. Hand washing is one of the public’s best defenses against the spread of both common and rare, even life-threatening, diseases including those caused by food, and against gastrointestinal infections caused by such organisms as the Norovirus, which plagues the cruise ship industry and food service in general.

The Incredible, Edible Egg Safety Quiz

This nutritious, delicate food is a part of many food service menus as a main course and one of the most common ingredients. The U.S. Dept. of Agriculture says Americans consume an average of 234 eggs per person per year. Eggs have also been the source of some significant foodborne outbreaks in the U.S. from one specific type of Salmonella. While eggs are an important source of protein in the diet, an estimated 1 in 20,000 eggs in the U.S. supply will contain the SE (Salmonella Enteritidis) bacteria and can cause illness if eaten raw in foods or not thoroughly cooked before consumption.

Fetching a Pail of Good, Safe Water

In the ambitious fight for food safety, don’t overlook the safety and quality of the crystal clear liquid coming out of your faucet. The United States has controls in place to ensure we have potable (safe) water that is treated and filtered to make it taste better and have no odor. Water standards and treatment are also important in food service so we don’t need a repairman twice a year to chip away the block of lime on the dishwashers heating element with a hammer and chisel in order to replace it.