It remains a mystery as to why some patients have no signs of illness while others are hospitalized and intubated. Can some of us be missing the symptoms? Dr. Oz has the essential quiz everyone should take right now. Plus, can your pets become infected and what are the symptoms to look out for?

Dr. Oz goes where he's never gone before. He's letting you eat fast-food and it's not what you expect. Learn which fast food meals you can eat under 500 calories while still enjoying the food you love.

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