One of the newest studies, by Gabriel Demombynes and Sofia Trommlerova, shows that Kenya’s infant mortality (deaths under the age of one year) has plummeted in recent years, and attributes a significant part of the gain to the massive uptake of anti-malaria bed nets. These findings are consistent with an important study of malaria death rates by Chris Murray and others, which similarly found a significant and rapid decline in malaria-caused deaths after 2004 in sub-Saharan Africa resulting from aid-supported malaria-control measures.