From month @ until study end , compared with @ episodes of clinical malaria that met the primary case definition in children in the C@C group , @ episodes occurred in the R@R group ( VE @ % , @ % CI @-@ ) and @ occurred in the R@C group ( @ % , @-@ ) ; compared with @ children who experienced at least one episode of severe malaria in the C@C group , @ children experienced at least one episode of severe malaria in the R@R group ( @ % , @ to @ ) and @ in the R@C group ( @ % , -@ to @ ) .