On this week's Health Chat, host Linord Moudou focuses on World Immunization Week and Africa Vaccination Week. The program looks at the significance of this year's theme "The Big catch Up" and the global challenges for children to have access to immunization during the past three years. Also in the show, a potential vaccine against breast cancer developed by Cleveland Clinic that is showing promising results. Health Chat is a live call-in program that addresses health issues of interest to Africa. The show puts listeners directly in touch with guest medical professionals. It includes a weekly feature spot, news and comments from listeners. The program is hosted by veteran health reporter Linord Moudou.