baka tribe immunity. "The Baka people, known in the Congo as Bayaka (Bebayaka, Bebayaga, Bibaya),[1] are an ethnic group inhabiting the southeastern rain forests of Cameroon, northern Republic of the Congo, northern Gabon, and southwestern Central African Republic and South Sudan in western Equatorial state that sharing the border with Congo and Central African Republic. They are sometimes called a subgroup of the Twa, but the two peoples are not closely related. Likewise, the name "Baka" is sometimes mistakenly applied to other peoples of the area who, like the Baka and Twa, have been historically called pygmies, a term that is no longer considered respectful." - Wikipedia See the 1 hour BBC documentary "Baka: a cry from the rainforest". Especially the 11:00 and 27:36 marks. It's viewable in some countries on YouTube (but not others) and can usually be found on torrent sites. Netherlands based company 'Ruinman's Aquarium' explorer and collector Roland Numeric met with some members of the Baka near Djoum in South Cameroon in February 2023: There is also a YouTube Video Playlist about the Baka. discussion Abstract: Filoviruses, including Ebolavirus and Marburgvirus, pose significant threats to public health and species conservation by causing hemorrhagic fever outbreaks with high mortality rates. Since the first outbreak in 1967, their origins, natural history, and ecology remained elusive until recent studies linked them through molecular, serological, and virological studies to bats. We review the ecology, epidemiology, and natural history of these systems, drawing on examples from other bat-borne zoonoses, and highlight key areas for future research. We compare and contrast results from ecological and virological studies of bats and filoviruses with those of other systems. We also highlight how advanced methods, such as more recent serological assays, can be interlinked with flexible statistical methods and experimental studies to inform the field studies necessary to understand filovirus persistence in wildlife populations and cross-species transmission leading to outbreaks. We highlight the need for a more unified, global surveillance strategy for filoviruses in wildlife, and advocate for more integrated, multi-disciplinary approaches to understand dynamics in bat populations to ultimately mitigate or prevent potentially devastating disease outbreaks.

papers about this immunity Leroy 2005 Multiple Ebola Virus Transmission Olival 2014 Filoviruses in Bats: Current Knowledge and Future Directions Other than the New York Times running one article on this, we have known some people are asymptomatic but had caught the disease from 1976 on and there are a few scientific papers that mention but never really discuss this phenomenon.