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Malaria vaccine trial results promising

18 October 2011 Last updated at 19:20 BST

A malaria vaccine has shown promising results in a clinical trial in Africa.

Infants given the prototype vaccine had about half the risk of getting malaria compared with those who did not receive the jab, say researchers.

The vaccine, known as RTS,S, is one of two experimental malaria vaccines being tested around the world.

More than 15,000 children aged under 18 months took part in the year-long study, published in The New England Journal of Medicine.

Fergus Walsh reports.