Five members of a family develop a sudden onset of watery diarrhea, nausea, vomiting, headache, and cramps. The family physician orders fecal cultures and complete ova and parasites analysis. Each sample reveals the presence of organisms seen below at 1000$\times$. The most likely cause of the infection is

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The Answer of Five members of a family develop a sudden onset of watery diarrhea, nausea, vomiting, headache, and cramps. The family physician orders fecal cultures and complete ova and parasites analysis. Each sample reveals the presence of organisms seen below at 1000$\times$. The most likely cause of the infection is

Five Members of a Family Develop a Sudden Onset of Watery