Anti-malarial drugs kill the parasites in the blood, Biology

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(a) Anti-malarial drugs kill the parasites in the blood but they do not cure the disease.Why is this?

(b) Why was the use of DDT insecticide not successful in eradicating malaria? 

 

(a) Anti-malarial drugs do not kill the parasites in the liver.

(b) The mosquitoes became resistant to the DDT insecticide.

 


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