state the conditions responsible for the spread of malaria and the measures to prevent and control it.

Malaria is spread by a bite of female mosquito Anopheles. Contaminated environment favours the growth of malarian mosquito. Stagnant water, garbage promotes malaria. They normally bite at the time of dawn and dusk. 
Use of insectide and bed nets can serve as preventive measures against mosquito.
Use of anti-malarian drugs to control it.

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