There's a lot of literature trying to disentangle genetic and cultural background in epidemiology, especially with regard to indigenous peoples in the Americas.

There's a lot of literature trying to disentangle genetic and cultural background in epidemiology, especially with regard to indigenous peoples in the Americas. However, the general idea that the immune systems of indigenous Americans are somehow uniquely susceptible to disease was a popular idea in the 80s that is now regarded as unsupported by evidence. Most of the prominent advocates (like black) have walked back on it.