Given what we know about the transmission of disease caused by microorganisms, we can confirm that had the contagious individual at the mock luncheon had not shared beverages or food, others may still have contracted the disease.
Therefore, we can confirm that had the contagious individual at the mock luncheon had not shared beverages or food, others may still have contracted the disease from having been in contact with that individual or other surfaces touched by the individual.
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