Á¦ ¸ñ    XlVrFczqbnsCS ÀÌ ¸§    Theron ³¯ Â¥    2018/06/29 Á¶ ȸ    1 Photography how to use viagra correctly The trial of the RTS,S vaccine candidate involves over 15,000 children at 11 sites in seven African countries, followed for 18 months after vaccination so far. In babies first vaccinated at 6â?“12 weeks old, RTS,S reduced the number of malaria cases by 27%. For children aged 5â?“17 months, the treated group experienced 46% fewer cases of malaria than the control group.