They left for Dallas on Friday, Bush's 66th birthday. They were in Africa promoting Pink Ribbon Red Ribbon, a partnership between the George W. Bush Institute, the U.S. President's Emergency Plan for AIDS Relief, UNAIDS and Susan G. Komen for the Cure that supports efforts to fight cervical and breast cancer in sub-Saharan Africa.
Earlier in the week, they helped to renovate a women's cancer screening center in Zambia.
The George W. Bush Presidential Center says the Bushes also met Peace Corps members in Botswana, and visited a home for ill, orphaned and vulnerable children where toddlers sang "Happy Birthday" to the former president.
