In 1985, guerrilla soldiers provide vaccination in El Salvador. During that time, the governments in the Americas create "Health: a bridge for peace," a model project enabling children to receive vaccinations while the guns fell silent. After months of negotiations in El Salvador, the President and opposition forces agreed to a temporary ceasefire to allow for immunizations. More than 20,000 people, including health workers, volunteers, and guerrilla forces, vaccinated the country's children.