Quick hit: the medical revolution in sub-Saharan Africa

There’s an important article about expanded access to health care in Sierra Leone in today New York Times. An excerpt:

Sierra Leone is at the vanguard of a revolution — heavily subsidized for now by international donors — that appears to be substantially lessening health dangers here in one of the riskiest countries in the world for pregnant women and small children.

Country after country in sub-Saharan Africa has waived medical fees in recent years, particularly for women and children, and while experts acknowledge that many more people are getting care, they caution that it is still too early to declare that the efforts have measurably improved health on the continent.

My question: what happens when the international donors lose interest?