People in Africa have every reason to be suspicious of white men coming in and injecting them with shit.

https://journalofethics.ama-assn.org/article/medicine-empires-and-ethics-colonial-africa/2016-07

https://news.uoregon.edu/content/medical-researchers-africa-must-learn-past-prof-finds

https://www.aljazeera.com/opinions/2020/4/8/medical-colonialism-in-africa-is-not-new

So yeah, it is frustrating to see when they push against things like vaccines, but it's entirely understandable given the history of what has been done to these people again and again.