Fig. 1

The study area of Matlab, Bangladesh. The Health and Demographic Surveillance System (HDSS) area of Matlab is located in central Bangladesh. Villages were divided into two groups, one group had access to specialized medical facilities operated by icddr,b and treatment for acute lower respiratory infections and the other group (referred to as the comparison group) received standard government care. Data source: icddr,b CPUCC/GIS Unit