Malaria vaccine difficult to roll out because four doses are needed, WHO says

An antimalaria vaccine for children will be piloted in up to five demonstration sites before being recommended for widespread use, a World Health Organization expert committee has announced.

A phase III trial showed that the RTS,S vaccine, which acts against Plasmodium falciparum, had an efficacy of around 30%.1 The vaccine, which is most effective in children aged between 5 months and 17 months, is given in three …