It’s always best to be up to date with all routine vaccinations when travelling to any country but Namibia does not require any specific vaccinations on entry. In any event, it is recommended to consult your local doctor and/or the closest Namibian authority to where you are for any updates. If you will be travelling via or through a yellow fever risk country then you will be required to carry the necessary vaccination certificates in this case.
For information with regards to the latest requirements on COVID-19: COVID-19 Updates or ask your consultant to advise.