"You can't see, smell or feel bacteria", Rottenberg said.
The researchers of the study examined over 300 people and placed them in test kitchens that were based in North Carolina.More news: Jar Jar Binks actor reveals he almost killed himself over Star Wars
Researchers found that barely 3 percent of people know how to properly wash their hands.
Here's a tip for a safer July 4th picnic or barbecue: A new report says the act of simply washing your hands may not be enough to avoid the spread of bacteria and illness. The Centers for Disease Control and Prevention found that 48 million Americans are sickened each year by foodborne illnesses, with 128,000 ending up in the hospital and 3,000 people dying from these illnesses.
Because they failed to properly wash their hands, 48 percent of the participants ended up contaminating (with the tracer microorganisms) the salt and pepper containers that were used to prepare the turkey burgers, while 11 percent contaminated the refrigerator handle and the faucet handle. People with weak immune systems, children, and older adults are at high risk of becoming sick with a foodborne illness. The USDA stressed that people use a food thermometer and properly cook their meat to its recommended safe internal temperatures. Their most common error was not rubbing their hands with soap for at least 20 seconds, followed by not washing their hands at all. It was about how to use a cooking thermometer correctly - the type you sink into a turkey.More news: Even "Safe" Levels of Air Pollution Pose Health Risks
Accordingly, almost half of the spice containers used by study participants in the control group (who did not watch the thermometer video) were contaminated. The researchers also observed that individuals only washed their hands after a possible cause of cross-contamination - such as handling raw meat - in about a third of instances.
And Luis Delgadillo with the USDA said drying your hands, versus just shaking them off, is a step that shouldn't be ignored. To time yourself, scrub for as long as it takes to hum the song "Happy Birthday" two times. They must be cleaned under running water and soap after using the toilet, before eating food, after touching animals, changing diapers, handling garbage, and more. And finally, dry your hands with a clean towel or air dry them.More news: Phoenix fans react to England-Colombia World Cup game at George & Dragon