Rogers Ochieng Otieno, 28, is a volunteer community health worker with the Rural Transport Network (run by Christian Aid and Virgin Unite) in Kenya.
He travels far from home to deliver hope and transform lives in remote communities.
His selfless compassion has saved many lives, including Patricia's - without Roger's support Patricia's two children could now be orphans.
Interactive map: follow Rogers' journey
Rogers travels through Kenya's remote Nyanza Province, where malaria and HIV rates are extremely high but many sick people simply cannot access the life-saving treatment they need.
Click on the icons below to see photos, watch videos and meet the families and communities he helps along the way.