Hi there, it will seem to me that you already have or are working on a solid tech background. My advice ? Be entrepreneurial about it, look at a specific problem that plagues healthcare in your country and see how that could be solved with some AI/ML. In Africa, we have barely scraped the surface of tech solutions to our pressing needs so if you are passionate about bringing some innovation in this sector, you won't have to think too hard. Just make sure that it is a solution tailored for the African context. Understand accessibility concerns to internet, smartphones and overall city infrastructures.
Hope this can help.