Select the best response to the question. Several patients come to the emergency department with abdominal pain and diarrhea after eating pasta salad at a family picnic. What type of pathogen transmission has occurred?

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The symptoms of abdominal pain and diarrhea after consuming the same food item (pasta salad) at a family picnic suggest that a common source of pathogen transmission has occurred. The food may have been contaminated with a pathogen, and all those who ate it may have become sick. This is known as a common vehicle transmission. Airborne transmission involves the spread of pathogens through the air, direct contact transmission involves physical contact with an infected person or contaminated object, and vector transmission involves the transfer of pathogens through the bites of insects or animals. None of these modes of transmission are consistent with the scenario described.

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