Food poisoning affects an estimated 48 million Americans every year, according to the CDC. Most cases are preventable. The practices that actually reduce your risk are straightforward: clean surfaces and hands properly, keep raw foods separate, cook to the right temperature, and refrigerate promptly. This guide walks through each of those steps and covers the higher-risk situations that tend to catch people off guard, including eating out, traveling, and navigating active food recalls.
The Four Core Rules: Clean, Separate, Cook, Chill
The FDA and USDA have long organized food safety guidance around four principles. They address the main ways pathogens reach food.
Clean
Wash hands with soap and water for at least 20 seconds before and after handling raw meat, poultry, seafood, or eggs. Rinse produce under running water even if you plan to peel it, because cutting through an unwashed rind can drag surface bacteria into the flesh. Cutting boards, utensils, and countertops should be washed with hot soapy water after contact with raw protein. Dish towels pick up bacteria quickly; replace or launder them frequently rather than reusing them across multiple tasks.
Separate
Cross-contamination is one of the leading causes of foodborne illness at home. Use separate cutting boards for raw meat and for produce. Store raw meat, poultry, and seafood in sealed containers on the lowest refrigerator shelf so drips do not reach other foods. At the grocery store, keep raw proteins in plastic bags and place them away from ready-to-eat items in your cart.
Cook
Heat is the most reliable tool for killing foodborne pathogens. Color alone is not a reliable indicator of doneness. A meat thermometer is the only way to know the internal temperature has reached a safe level.
Chill
Bacteria multiply rapidly between 40 degrees F and 140 degrees F, a range the USDA calls the "danger zone." Refrigerate perishable foods within two hours of cooking or purchasing, or within one hour if the ambient temperature is above 90 degrees F. Thaw frozen food in the refrigerator, under cold running water, or in the microwave, not on the countertop.
Safe Internal Cooking Temperatures
The following temperatures are based on USDA and FDA FoodKeeper guidelines. Measure at the thickest part of the food, away from bone, fat, or gristle.
- Poultry (whole birds, parts, ground): 165 degrees F (74 degrees C)
- Ground beef, pork, veal, and lamb: 160 degrees F (71 degrees C)
- Whole cuts of beef, pork, veal, and lamb: 145 degrees F (63 degrees C) with a 3-minute rest
- Fish and shellfish: 145 degrees F (63 degrees C), or until flesh is opaque and flakes easily
- Shrimp, lobster, crab, and scallops: Cook until flesh is pearly white or opaque
- Clams, oysters, and mussels: Cook until shells open; discard any that do not open
- Eggs: Cook until yolk and white are firm, or 160 degrees F in dishes containing eggs
- Leftovers and casseroles: 165 degrees F (74 degrees C)
- Ham (pre-cooked, reheating): 140 degrees F (60 degrees C)
If you do not own a food thermometer, a simple instant-read probe costs under $15 and is one of the most effective food safety investments you can make.
Refrigerator Storage Times
Even properly refrigerated food has a limited safe window. These general timelines cover the most common situations, based on FDA FoodKeeper guidance:
- Raw ground meat and poultry: 1 to 2 days
- Raw steaks, chops, and roasts: 3 to 5 days
- Raw fish and seafood: 1 to 2 days
- Cooked meat, poultry, and fish: 3 to 4 days
- Hard-boiled eggs: 1 week in shell; 1 week peeled and stored in water
- Opened deli meat: 3 to 5 days
- Cooked leftovers (soups, stews, casseroles): 3 to 4 days
- Soft cheeses (ricotta, brie, feta): 1 week
- Hard cheeses (cheddar, parmesan, opened): 3 to 4 weeks
When in doubt, follow the USDA's straightforward guidance: if you are not sure whether food is still safe, discard it. Many dangerous pathogens including Salmonella and E. coli O157:H7 produce no visible signs.
Highest-Risk Foods
Certain foods are more frequently implicated in outbreaks because of how they are produced, processed, or consumed.
- Raw or undercooked poultry: The primary source of Campylobacter and a common vehicle for Salmonella.
- Raw or undercooked eggs: Linked to Salmonella outbreaks from mayonnaise, cookie dough, and hollandaise sauce.
- Raw sprouts: Seeds can harbor bacteria internally and cannot be made safe by washing alone. The FDA recommends that children, older adults, pregnant women, and immunocompromised individuals avoid raw sprouts entirely.
- Unpasteurized milk and juice: Pasteurization kills pathogens; unpasteurized products carry significant risk, particularly for vulnerable populations.
- Raw shellfish: Oysters and clams filter large volumes of water and can concentrate Vibrio bacteria, norovirus, and Hepatitis A.
- Leafy greens: Romaine lettuce, spinach, and similar produce have been repeatedly linked to E. coli O157:H7 outbreaks tied to contaminated irrigation water.
- Deli meats and hot dogs: A risk for Listeria, which can grow at refrigerator temperatures. The CDC advises pregnant women, immunocompromised individuals, and adults over 65 to heat deli meats to steaming before eating.
Eating Out Safely
You have less control in a restaurant than in your own kitchen, but you can still make lower-risk choices. Check local health inspection scores, which most jurisdictions publish online. Avoid buffets where food sits at room temperature for extended periods. Request that burgers, poultry, and eggs be cooked fully. Be cautious with dishes that contain raw or undercooked protein, including steak tartare, sushi, and Caesar dressing made with raw egg. If food arrives undercooked, it is reasonable to send it back.
Food Safety When Traveling Abroad
Travelers' diarrhea is usually caused by consuming food or water contaminated with bacterial pathogens, most often enterotoxigenic E. coli. The risk is highest in parts of Latin America, sub-Saharan Africa, South Asia, and Southeast Asia, though it can occur anywhere food safety infrastructure is limited.
Practical steps for international travel include drinking bottled or commercially treated water, avoiding ice unless you know it was made from safe water, eating fruits and vegetables you can peel yourself, choosing cooked foods served hot, and being cautious with street food vendors who have no visible handwashing setup. The CDC Travelers' Health site provides region-specific guidance and pre-travel vaccination recommendations relevant to food safety.
How to Check for Active Food Recalls
Food recalls happen regularly. The FDA and USDA both operate recall databases that are updated as new contamination events are identified.
- FDA recalls: The FDA maintains an active list of recalled food products at fda.gov, updated continuously.
- USDA FSIS recalls: The USDA Food Safety and Inspection Service maintains a separate recall list for meat, poultry, and processed egg products at fsis.usda.gov/recalls.
- CDC outbreak investigations: The CDC posts active outbreak investigations at cdc.gov/foodsafety/outbreaks, including the implicated food and geographic scope.
If you have already purchased a recalled product, do not eat it. The recall notice will specify whether to discard or return it.
Virus Watcher monitors food safety alerts and outbreak investigations from the FDA, USDA, and CDC in near real time. When a new recall or outbreak investigation is posted, it appears in the Virus Watcher feed so you do not have to check multiple government sites manually.
For a broader understanding of how to recognize food poisoning when it occurs, see our article on food poisoning symptoms and when to seek care.
Putting It Together
Most foodborne illness is preventable with consistent habits. Wash hands before and after handling raw food. Use a thermometer instead of guessing on doneness. Refrigerate leftovers promptly. Keep raw meat away from ready-to-eat items. Know which foods carry the highest risk and apply extra care with those. Check recalls periodically, especially after news of an outbreak.
For ongoing food safety monitoring, Virus Watcher tracks recalls, outbreak investigations, and food safety alerts across federal sources. You can follow food safety events directly in the app to stay informed when new risks are identified.
