Eating a diet rich in fruits and vegetables is often touted as a healthy choice, but it is important to remember that food safety is just as important as nutrition. We need to be aware of the safety of the food we consume, and this includes the food we purchase from the supermarket.
Fruits and vegetables are packed with essential nutrients that promote overall health and wellness. While they are generally safe to consume, they can also harbor harmful pathogens that pose a risk to consumers, including Listeria monocytogenes, Salmonella, and E. coli. According to the CDC, a significant percentage of foodborne illnesses in the USA are caused by germs on fresh produce.
Apart from the presence of food pathogens, there are also pesticides. Pesticides are often used to control pests and diseases in fresh vegetables, salad cheeses, and melons. While these pesticides are essential for crop protection, they can also pose health risks to humans if they are not used correctly.
Listeria monocytogenes (L. monocytogenes) is a species of pathogenic (disease-causing) bacteria that can be found in moist environments, soil, water, decaying vegetation, and animals. It can survive and even grow under refrigeration and other food preservation measures.
Listeria can also be difficult to fully remove from food processing facilities. If a facility has Listeria germs, the germs can spread to food that touches contaminated equipment or surfaces. Listeria can also spread from contaminated food to surfaces. It can even grow on foods kept in the refrigerator. The good news is that Listeria is easily killed by heating food to a high enough temperature.
People can get infected by eating the following:
Fresh Ideation Food Group in the USA recalled products in January 2023 due to possible Listeria contamination. The recall was initiated after company samples tested positive for the bacteria. No illnesses have been reported to date. The recalled products were sold in retail locations, vending machines, and during travel with transportation providers. The products include sandwiches, salads, snacks, yogurt, wraps, and related products.
A second recall for possible Listeria contamination was announced by the USDA’s Food Safety and Inspection Service (FSIS) on January 29, 2023. The recall was for 52,914 pounds of sausage commonly used to make charcuterie boards. On February 3, 2023, the total pounds of recalled sausage increased to 69,255. The FSIS discovered Listeria monocytogenes on surfaces which the product came in contact with during a routine inspection. To date, there have been no confirmed illnesses reported.
1. Keep the kitchen clean. Clean your refrigerator regularly with hot water and liquid soap. Prepare meats and vegetables separately and be sure to sanitize food preparation areas.
2. Keep the fridge cool. Because listeria can easily grow in cool temperatures, keep your refrigerator at 5 degrees Celsius or lower. The freezer should be at minus 18 degrees Celsius or lower.
3. It is recommended to choose pasteurized milk and dairy products. Pasteurization heats milk to a high enough temperature for a long enough time to kill germs that can make you sick.
4. Avoid eating soft cheeses such as queso fresco, queso blanco, panela (queso panela), brie, Camembert, blue-veined, or feta, unless it is labeled as made with pasteurized milk.
5. Always thoroughly heat sprouts first, even homegrown versions can harbor bacteria. When eating out, be sure to ask that no raw spouts be added to your food.
6. Always thoroughly wash any greens to be safe:
7. Eat cut melon right away and throw away any unrefrigerated for four or more hours. Refrigerate cut melons at 5 degrees Celsius or colder for no more than seven days.
8. Avoid eating cold cuts such as bologna, hot dogs, lunch meats, fermented, or dry sausages or any other deli meats unless they are heated to steaming hot 74 degrees Celsius just before serving.
9. When eating these foods at home should be careful not to allow juice from hot dogs and lunch meat packages to get on other foods or food preparation surfaces, plates, and utensils. Always carefully wash your hands after touching any type of hot dog, lunch, or deli meat.
10. Be aware of how long you store such foods in your home. Factory-sealed unopened packages of hot dogs, lunch, and deli meats should be thrown away after two weeks in the fridge.
Listeria is especially harmful to people including older adults (65 and older) people with weakened immune systems, health problems or take medicines that lower the body’s ability to fight germs and sickness, pregnant women, and newborns.
The signs and symptoms of Listeria infection vary depending on the person infected and the part of the body affected. One is an invasive illness, which means bacteria have spread beyond the intestines (gut). Invasive listeriosis happens when Listeria has spread beyond the intestines.
Symptoms of an invasive illness usually start within two weeks after eating food contaminated with Listeria.
Listeria can also cause an intestinal illness. This kind of illness is rarely diagnosed because laboratories do not regularly test patient stool samples for Listeria.
Symptoms of an intestinal illness usually start within 24 hours after eating food contaminated with Listeria and usually last one to three days.
Do reach out to us to learn more about how DKSH can help your food-related business be more aware of food safety and the risks of food pathogens.
Potchara Sungtong is the Director, Food and Beverage for DKSH Thailand overseeing the Asia Pacific region. With a background in food science and microbiology, he has over 20 years of experience in research and development, sales and marketing, channel management, and business development in food and beverages. Potchara has extensive knowledge in food safety, customer requirements, laboratory workflows, and lab efficiencies.