Question

In 2014 Bill Gates, speaking to the American Society of Tropical Medicine and Hygiene, stated that malaria could be eradicated within a generation. Much the same prediction was made in 1955 by the world's preeminent malariologist, Dr. Paul Russell of Rockefeller University. What biological factors have prevented this goal from being achieved?

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Answer 1

Vaccines are not effective against malaria because the malarial parasite ( plasmodium ) continuously changes , so our body can't eliminate the plasmodium because our body can't develop immunity towards the malarial parasite

In the similar way the female mosquito which is responsible for transmission of malarial parasite also develops resistance to the insecticides due to prolonged exposure to the insecticide by the mosquito

So these are the biological factors that prevents complete eradication of malaria from the world