1. Fred was making macaroni salad, but he couldnt find a spoon so he used his hands to mix in the dressing. There were four Staphylococcus aureus bacteria on his hands, which contaminated the salad. Fred then took the salad to a picnic, where it was left out, unrefrigerated for two hours. Was this salad safe to eat?

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Solution

The salad was not safe to eat as suitable conditions are present for multiplication of Staphylococcus aureus bacteria. Salad was left out unrefrigerated for two hours. In these conditions the bacteria can multiply many times and contaminate the food more acutely.

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