Pretty interesting lines of study, looking at the DNA of pre, during and post Black Death skeletons to see how some may have survived due to a mutation which passed down over the centuries might have led to autoimmune disorders in some people today.
Black Death 700 years ago affects your health now
Mutations that saved lives from the plague are causing auto-immune diseases today.
www.bbc.com
Evolution of immune genes is associated with the Black Death - Nature
Klunk and colleagues identify signatures of natural selection imposed by Yersinia pestis and demonstrate their effect on genetic diversity and susceptibility to certain diseases in the present day.
www.nature.com