Infectious disease experts face a unique challenge: they know exactly how germs spread, yet they avoid illness through surprisingly simple habits. Rather than disinfecting every surface or avoiding public spaces, these specialists incorporate a handful of practical routines into their daily lives that reduce risk without diminishing quality of life. The common thread is not fear but consistency—small actions that repeatedly lower the odds of encountering harmful microbes.
One area where experts focus heavily is food safety in the kitchen. Cross-contamination is a leading cause of foodborne illness, according to Dr. Jill Roberts, a molecular epidemiologist at the University of South Florida College of Public Health. Her preferred strategy is a color-coded cutting board system, designating a red board exclusively for raw meat and other boards for vegetables and ready-to-eat foods. She also emphasizes the order of preparation: make the salad first, refrigerate it, and only then bring out the raw meat. Once meat is handled, surfaces such as counters, sinks, faucet handles, and refrigerator doors are sanitized promptly. Another food safety tip involves washing produce under running water rather than soaking it in a bowl. Dr. Heidi Torres, an infectious disease physician at Weill Cornell Medical College, explains that about 30 seconds of gentle rubbing under running water is far more effective because a bowl can allow germs from one contaminated piece to spread to others. Running water washes bacteria, viruses, and some pesticide residues away, though it does not remove all pathogens likeCyclospora.
The humble kitchen sponge is another vector that experts address directly. Damp, warm, and filled with food particles, a sponge can become a breeding ground for bacteria. Kelley Steury, a clinical associate professor at the University of Nevada, Reno, recommends rinsing the sponge until no food remains and then microwaving it while wet for 20 seconds. A dry sponge should never be microwaved, as it could ignite. Bathroom hygiene also receives attention. Bath mats should be washable and hung to dry after each use, ideally laundered weekly to prevent the spread of microbes like athlete's foot fungus. Dr. Roberts advises removing any rug that wraps around the base of the toilet, because rubber backings often do not survive washing and the area is prone to splash-over, especially in households with children.
Oral hygiene is a surprisingly powerful infection prevention tool. Dr. Torres notes that at least a quarter of the infections she treats are linked to dental disease. Cavities and gum disease allow more bacteria—and more aggressive strains—to enter the bloodstream, which she describes as a highway to all organs. Sometimes the bacteria found in an infection can only have originated in the mouth. Brushing, Torres emphasizes, requires mechanical action to break down the bacterial film; rinsing alone is insufficient. Hospitals have begun treating basic oral care as a component of infection prevention, reinforcing its importance at home. Another simple but effective habit is leaving shoes at the door. Dr. Cesar J. Figueroa Ortiz, an infectious disease specialist at Memorial Sloan Kettering Cancer Center, explains that shoes collect contaminants from sidewalks and public spaces, and tracking them indoors can expose household members to unnecessary risks.
These habits, while individually small, collectively build a barrier against common infections. The experts agree that extreme measures are unnecessary; instead, consistent attention to a few key areas—food preparation, kitchen and bathroom cleaning, oral health, and reducing outside contaminants—can significantly lower the chance of getting sick. Their approach is not about living in a sterile bubble but about making smart, manageable choices that add up over time.
