Streptococcus Pneumonia Colonization among Children in Galle, Sri Lanka: A Cross-Sectional Study” This study aims to explore the percentage of children under five who carry Streptococcus pneumonia, one major cause of pneumonia in children, and related risk factors for the carriage. The Research activities will not be influenced by the funding agencies /authorities and the authors will not have any conflict of interest in relation to funding.(Investigators: Mr. Chi Zhang , Dr. Gaya Wijayaratne, Dr. Gayani Tillekeratne,  Prof. Ajith Nagahawatte, Prof. Christopher Woods, Prof. Champica Bodinayake, Dr. Bradley Nicholson Ms. Ruvini Kurukulasooriya).