Researchers at the Francis Crick Institute and UCL have analysed ancient DNA from Borrelia recurrentis, a type of bacteria that causes relapsing fever, pinpointing when it evolved to spread through lice rather than ticks, and how it gained and lost genes in the process. This transition may have coincided with changes in human lifestyles, like living closer together and the beginning of the wool trade. Borrelia recurrentis bacteria cause relapsing fever, an illness with many recurring episodes

Tag-uri: DNA