Trials, reported in 2015, had shown the vaccine could prevent around four in 10 cases of malaria, three in 10 severe cases and lead to the number of children needing blood transfusions falling by a third.
However, there were doubts the vaccine would work in the real world as it requires four doses to be effective.
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The first three are given a month apart at five, six and seven months old, and a final booster is needed at around 18 months.
The findings of the pilots have been discussed by two expert advisory groups at the WHO on Wednesday.
Source: Daily Express
