Fig. 1From: Cost-effectiveness of childhood pneumococcal vaccination program in Ethiopia: results from a quasi-experimental evaluationSurvival curves of first time acute lower respiratory infection (ALRI) at Butajira rural health program site, for three years and three months from inclusion in the study in the intervention group (Sept. 2011 – Aug. 2012) and control group (Sept. 2009 – Aug. 2010)Back to article page