english: And so we started gathering scientists and started learning about population, learning about vaccines, learning about what had worked and what had failed, and that's really when we got going, was in late 1998, 1999.
non_english: We praatten met wetenschappers en we leerden over de bevolking en over vaccinaties. We leerden over wat wel en niet werkte en op dat moment gingen we ervoor. Dat was eind 1998, 1999.