My name is Darius T. C. Keller; i work with WHO as an Epidemiologist. i live and work in Liberia and control one of the subcountry as a coordinator. i have previously worked with the ministry of Health in Liberia.

My focus of work involved greatly with Immunization and Disease surveillance including vaccine preventable diseases. i have contributed immesely during the outbreak of ebola in Liberia and now involve with the stabilization of the Health system.