Types of cross-contamination

Three main types of cross-contamination:

Food-to-food,
Equipment-to-food, and
People-to-food

1. Food-to-food

Adding contaminated foods to non-contaminated foods ends up in food-to-food cross-contamination. this permits harmful bacterium to unfold and populate.

Raw, undercooked, or improperly washed food will harbor massive amounts of bacterium, like enterics, clostridium perfringens, Campylobacter, coccus aureus, E. coli, and Listeria monocytogenes — all of which may damage your health if consumed.Trusted supply

Foods that cause the highest risk of microorganism contamination embrace leafy  greens, bean sprouts, leftover rice, unpasteurised milk, soft cheeses, and shop meats, furthermore as raw eggs, poultry, meat, and food.

For example, adding unwashed, contaminated lettuce to a contemporary dish will contaminate the opposite ingredients. This was the case during a 2006 E. Coli eruption that affected seventy one Taco Bell customers.

What’s a lot of, leftovers unbroken within the icebox too long may result in microorganism overgrowth. Therefore, eat leftovers inside 3–4 days and cook them to correct temperatures. If you propose to combine leftovers with alternative foods, the new meal shouldn't be keep once more as leftovers.

2. Equipment-to-food

Equipment-to-food is one among the foremost common nevertheless unrecognized kinds of cross-contamination.

Bacteria will survive for long periods on surfaces like countertops, utensils, cutting boards, storage containers, and food producing equipment.

When equipment isn't washed properly or inadvertently contaminated with microorganism, it will transfer massive volumes of harmful microorganism to food. this may happen at any purpose throughout food production — each reception and in food producing.

For example, a 2008 incident at a Canadian-based sliced meat company resulted within the death of twenty-two customers because of listeria-contaminated meat slicers.

A common example of this occurring reception is exploitation identical board and knife to chop meat and vegetables, which might be harmful if the vegetables ar then consumed raw .

One study found that older participants were less doubtless to use soap and water to wash their cutting boards once operating with meat, whereas younger folks weren’t attentive to the risks of cross-contamination. Thus, additional food safety education appears to be required across all age teams .

Finally, improper food preservation techniques will cause cross-contamination. In 2015, home-canned potatoes employed in a salad created twenty two repast attendees sick with gastrointestinal disorder because of improper canning practices.

3. People-to-food

Humans will easily transfer microorganism from their bodies or garments to food throughout several steps of food preparation.

For example, someone could cough into their hand or bit raw poultry and still prepare a meal while not washing their hands in between .

In a 2019 study in one hundred ninety adults, only fifty eight of participants reported  laundry their hands before cookery or making ready food, whereas only forty eighth said they washed their hands when reflex or coughing.

Other common examples embrace employing a radiophone that’s loaded with microorganism whereas cookery or wiping your hands with a unclean apron or towel. These practices could contaminate your hands and unfold microorganism to food or instrumentality .

Although this poses a priority, a 2015 meta-analysis found that food safety education each within the home and at work will considerably lower the chance of cross-contamination and unsafe food practices.

By far, the foremost effective thanks to scale back the risk of cross-contamination is to properly wash your hands with soap and water for at least twenty seconds