In mid 2011, the Foundation announced in its new "Water, Sanitation, Hygiene Strategy Overview" that its funding now focuses primarily on sanitation, particularly in sub-Saharan Africa and South Asia, because access to improved sanitation is lowest in those regions. <answer>Their grant-making focus has been since 2011 on sanitation science and technology ("transformative technologies")</answer>, delivery models at scale, urban sanitation markets, building demand for sanitation, measurement and evaluation as well as policy, advocacy and communications.
What has been the focus since 2011
Their grant-making focus has been since 2011 on sanitation science and technology ("transformative technologies")