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.
E então começamos a reunir cientistas e a aprender sobre a população, sobre vacinas, e sobre o que tinha ou não funcionado. E foi aí que realmente começamos, era o final de 1998, 1999.