🔬 Discovery

First proof of RTS,S vaccine efficacy in children (Manhiça)

Primera prueba de eficacia de la vacuna RTS,S en niños (Manhiça)

Date
2004 · confidence high
Place
Manhiça, Maputo, Mozambique
Credited to
Pedro Alonso and the Manhiça Health Research Centre (CISM)
Field
Life & health

What was discovered

A randomised trial in Mozambican children aged 1 to 4 showing that the RTS,S vaccine cut clinical malaria episodes by 30% and severe ones by 58%. It showed for the first time that a malaria vaccine could protect African children.

Published in The Lancet (2004). The vaccine was developed from 1987 at GlaxoSmithKline (Belgium) and the US Army; Manhiça provided the proof of efficacy in children, not the invention.

What it led to

  • phase 3 trial in seven African countries (2009-2014)
  • WHO recommendation of RTS,S in 2021 for African children
  • the next-generation R21/Matrix-M vaccine

Links

Sources✓ verified 2026-11-04