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Thanksgiving is a time for family, friends and feasting. However, amid the joy of gathering and indulging in delicious food, it is essential to keep food safety in mind. Foodborne illnesses can quickly put a damper on your celebrations.
As an immunologist and infectious disease specialist, I study how germs spread – and how to prevent them from doing so. In my courses, I teach my students how to reduce microbial risks, including those tied to activities such as hosting a big Thanksgiving gathering, without becoming germophobes.
Foodborne illnesses sicken 48 million Americans – 1 in 6 people – each year. Holiday meals such as Thanksgiving pose special risks because these spreads often involve large quantities, long prep times, buffet-style serving and mingling guests. Such conditions create many opportunities for germs to spread.
This, in turn, invites a slew of microbial guests such as Salmonella and Clostridium perfringens. Most people recover from infections with foodborne bacteria, but each year around 3,000 Americans die from the illnesses they cause. More routinely, these bugs can cause nausea, vomiting, stomach cramps and diarrhea within hours to a couple of days after being consumed – which are no fun at a holiday celebration.
Foods most likely to cause holiday illness
Most foodborne illnesses come from raw or undercooked food and foods left in the so-called danger zone of cooking temperature – 40 degrees to 140 degrees Fahrenheit – in which bacteria multiply rapidly. Large-batch cooking without proper reheating or storage as well as cross contamination of foods during preparation can also cause disease.
Not all dishes pose the same risk. Turkey can harbor Salmonella, Campylobacter and Clostridium perfringens. Undercooked turkey remains a leading cause of Thanksgiving-related illness. Raw turkey drippings can also easily spread bacteria onto hands, utensils and counters. And don’t forget the stuffing inside the bird. While the turkey may reach a safe internal temperature, the stuffing often does not, making it a higher-risk dish.
Leftovers stored too long, reheated improperly or cooled slowly also bring hazards. If large pieces of roasted turkey aren’t divided and cooled quickly, any Clostridium perfringens they contain might have time to produce toxins. This increases the risk of getting sick from snacking on leftovers – even reheated leftovers, since these toxins are not killed by heat.
Indeed, each November and December outbreaks involving this bacterium spike, often due to encounters with turkey and roast beef leftovers.
Don’t wash the turkey!
Washing anything makes it cleaner and safer, right? Not necessarily.
Many people think washing their turkey will remove bacteria. However, it’s pretty much impossible to wash bacteria off a raw bird, and attempting to do so actually increases cross contamination and your risk of foodborne illness.
Since 2005, federal food safety agencies have advised against washing turkey or chicken. Despite this, a 2020 survey found that 78% of people still reported rinsing their turkey before cooking – often because older recipes or family habits encourage it.
When you rinse raw poultry, water can splash harmful bacteria around your kitchen, contaminating counter tops, utensils and nearby foods. If you do choose to wash turkey, it’s critical to immediately clean and disinfect the sink and surrounding area. A 2019 USDA study found that 60% of people who washed their poultry had bacteria in their sink afterward – and 14% had bacteria in the sink even after cleaning it.
Food prep tips for a safe and healthy Thanksgiving
Wash your hands regularly. Before cooking and after touching raw meat, poultry or eggs, wash your hands thoroughly with soap and water for at least 20 seconds. Improper handwashing by people handling food is a major source of bacterial contamination with Staphylococcus aureus. This bacterium’s toxins are hard to break down, even after cooking or reheating.
Thaw turkey safely. The safest way to thaw a turkey is in the refrigerator. Allow 24 hours per 4-5 pounds. There’s also a faster method, which involves submerging the turkey in cold water and changing the water every 30 minutes – but it’s not as safe because it requires constant attention to ensure the water temperature stays below 40 F in order to prevent swift bacteria growth.
Stuff your turkey immediately before cooking it. Stuffing the turkey the night before is risky because it allows bacteria in the stuffing to multiply overnight. The toxins produced by those bacteria do not break down upon cooking, and the interior of the stuffing may not get hot enough to kill those bacteria. The USDA specifically warns against prestuffing. So cook stuffing separately, if possible, or if you prefer it inside the bird, stuff immediately before roasting, making sure it reaches 165 F.
Cook food to the right temperature. A thermometer is your best friend – use it to ensure turkey and stuffing both reach 165 F. Check casseroles and other dishes too. It’s best not to rely on an internal pop-up thermometer, since they can be inaccurate, imprecise and could even malfunction.
Avoid cross contamination. Use separate cutting boards for raw meat, vegetables and bread. Change utensils and plates after handling raw meat before using them for cooked foods.
Keep food at safe temperatures. Serve hot foods immediately, and make sure hot foods are served above 140 F and cold dishes below 40 F to keep them out of the microbial danger zone.
Be cautious with buffet-style serving. Limit food time on the table to two hours or less – longer than that, any bacteria present can double every 20 minutes. Provide dedicated serving utensils, and avoid letting guests serve with utensils they have eaten from.
Be mindful of expiration dates. Don’t forget to check dates on food items to make sure that what you are serving isn’t expired or left from last Thanksgiving.
Educate guests on food safety. Remind guests to wash their hands before preparing or serving food, and politely discourage double-dipping or tasting directly from communal dishes.
Thanksgiving should be a time of gratitude, not gastrointestinal distress. By following these simple food safety tips, you can help ensure a safe and healthy holiday.
Lisa Cuchara, Professor of Biomedical Sciences, Quinnipiac University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
