Dr. Md. Tanvir Hossen is an epidemiologist specializing in immunization systems, infectious disease research, and outbreak response. She holds a Master’s in Vaccinology and drug development Epidemiology from Siena University and an MPH from North South University. Dr. Tanvir has worked with WHO and Jhpiego on immunization, VPD surveillance, and outbreak response. He has significant contribution in research on immunization systems, and vaccines. He is currently the Immunization Technical Advisor at Jhpiego, Dhaka, Bangladesh.