typical incubation time is between 10 to 20 days. A boy started school 2 weeks after showing symptoms of chicken pox including mild fever, skin rash, and fluid-filled blisters. One month after the boy returned to school, none of his classmates had been infected by VZV. The main reason was: Contact was after infectious period The ability of a single person to remain free of clinical illness following exposure to an infectious agent is known as: Immunity Which of the following is characteristic of a single-exposure, common-vehicle outbreak? The epidemic curve has a normal distribution when plotted against the logarithm of time What is the diarrhea attack rate in persons who ate both ice cream and pizza? 39/52 What is the overall attack rate in persons who did not eat ice cream? 33% Which of the food items (or combination of items) is most likely to be the infective item(s)? Ice cream only Which of the following reasons can explain why a person who did not consume the infective food item got sick? They were directly exposed to persons who did eat the infective food item Diarrhea is a general symptom consistent with a number of illnesses There may have been an inaccurate recall of which foods w [Show less]
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