Southern Cone: INCOSUR
 (Argentina, Bolivia, Brazil, Chile, Paraguay, & Uruguay)
Offices: PAHO-Uruguay |
Central America:
IPCA

(Belize, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Panama, & Nicaragua)
Offices: PAHO-Honduras |
Amazon:
AMCHA

(Bolivia, Brazil, Colombia, Ecuador, France, Guyana, Peru, Suriname, & Venezuela)
Offices: PAHO-Brazil |
Andes: IPA

(Colombia, Ecuador, Peru, & Venezuela)
Offices: OPS-Ecuador |