Here is a quote from our study: RhD negative subjects have increased the risk of developing of certain heart diseases, respiratory diseases and some immunity and autoimmunity related diseases, for example rheumatoid arthritis. The general pattern suggests that RhD negative subjects could have problems with autoimmunity, could be more resistant to infections of viral origin and could be less resistant to infections of bacterial origin. Our study: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0141362 Let’s look at some diseases of viral origin individually: Chikungunya Coronavirus Ebola Flu HIV The Plague