Three countries in Africa -- Ghana, Kenya and Malawi-- have been chosen to test the world's first malaria vaccine through a pilot program beginning next year, the World Health Organization (WHO) announced Monday.
The vaccine, which has partial effectiveness and will first be used on children, 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 infects more than 200 million people worldwide every year and kills 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.
A global effort to counter malaria has led to a 62 percent cut in deaths between 2000 and 2015, WHO said. But the U.N. agency has said in the past that such estimates are based mostly on modeling and that data is so bad for 31 countries in Africa — including those believed to have the worst outbreaks — that it couldn't tell if cases have been rising or falling in the last 15 years.
The vaccine will be tested on children five to 17 months old to see whether its protective effects shown so far in clinical trials can hold up under real-life conditions. The vaccine 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.
The malaria vaccine has been developed by pharmaceutical company GlaxoSmithKline, and the $49 million for the first phase of the pilot is being funded by the global vaccine alliance GAVI, UNITAID and Global Fund to Fight AIDS, Tuberculosis and Malaria.
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