Fig. 1From: Epidemiology and risk factors for pneumonia severity and mortality in Bangladeshi children <5 years of age before 10-valent pneumococcal conjugate vaccine introductionTotal number of pneumonia cases with or without specimen collection by month, January 2011-December 2013. This figure shows the total number of pneumonia cases with or without specimen collection by month during January 2011 through December 2013 at the surveillance hospitals. There appears to be some seasonality with cases peaking during the August, September, and October monthsBack to article page