Africans set to test first malaria shots

JOHANNESBURG — Three African countries have been chosen to test the world’s first malaria vaccine, the World Health Organization announced Monday. Ghana, Kenya and Malawi will begin testing the injectable vaccine next year with hundreds of thousands of young children, who have been at highest risk of death.

The vaccine, which has partial effectiveness, has the potential to save tens of thousands of lives if used with existing measures, the WHO regional director for Africa, Dr. Matshidiso Moeti, said in a statement. The challenge is whether impoverished countries can deliver the required four doses of the vaccine for each child.

Malaria remains one of the world’s most stubborn health challenges, infecting more than 200 million people every year and killing about half a million, most of them children in Africa. Bed netting and insecticides are the chief protection.

Sub-Saharan Africa is hardest hit by the disease, with about 90 percent of the world’s cases in 2015. Malaria spreads when a mosquito bites someone already infected, sucks up blood and parasites, and then bites another person.

The vaccine will be tested on children from 5 months to 17 months old to see whether its protective effects, shown so far in clinical trials, can hold up under real-life conditions. At least 120,000 children in each of the three countries will receive the vaccine, which has taken decades of work and hundreds of millions of dollars to develop.

Kenya, Ghana and Malawi were chosen for the vaccine pilot because all have strong prevention and vaccination programs but continue to have high numbers of malaria cases, WHO said. The countries will deliver the vaccine through their existing vaccination programs.

WHO is hoping to wipe out malaria by 2040 despite increasing resistance problems to both drugs and insecticides used to kill mosquitoes.

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