Live vaccines, such as oral poliovirus vaccine; yellow fever vaccine; and measles, mumps and rubella vaccines, do not contain thiomersal, because it would kill the immunizing component.

The vaccine (1 500 000 doses) has been provided by the The GAVI Alliance emergency stockpile, through the International Coordinating Group (ICG) on Vaccine Provision for Yellow Fever Control.

This support is part of the global Yellow Fever Initiative which aims to prevent devastating yellow fever epidemics and secure adequate yellow fever vaccine supply for Africa.