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Earn 100

The symptom of dengue fever is a sudden onset of fever that lasts three-seven days.
(a)True
(b)False

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Important Questions on Useful and Harmful Microbes
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(a) When you are taking examinations.
(b) When you have travelled by bus and train for two days.
(c) When your friend is suffering from measles.
Why?

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Under which of the following conditions are you most likely to fall ill?

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