Vaccine named RTS , S could be available by October , scientists believe . Comment: Designed for use in children in Africa , it can prevent up to half of cases . Experts hail 'extraordinary achievement ' for British firm that developed it .
Vaccine named RTS , S could be available by October , scientists believe . Will become the first approved vaccine for the world 's deadliest disease . Designed for use in children in Africa , it can prevent up to half of cases . Experts hail 'extraordinary achievement ' for British firm that developed it .