Probable identification of the bacterium behind the epidemic of 1545, which killed off as much a 80% of the Mexican population (what was left after the smallpox epidemics, anyway):
https://www.theguardian.com/world/2018/jan/16/mexico-500-years-later-scientists-discover-what-killed-the-aztecs
Or the original (https://www.nature.com/articles/s41559-017-0446-6.epdf?referrer_access_token=qo0mOtg-tm2YNEWYlINbldRgN0jAjWel9jnR3ZoTv0PV_jzLPcKYSBB6Npew6r3TlUOeYzqAW37_yy60jy_08uFi_rSAffgN2XNa1tRt1nseH1CYPAMwLhnww9bxmzUokKTpDFndzevBaGTcLkj_LsljA4_IgzwsldtTTDrJPv7vOqC0B059QkgUCxTZ-07ZzQzbJW0Vlf8QpnbbcaFlfUeJKYu25aXMTg2uFSgL-IU4s0GhRHVxexC3RIl-EEWd8XGYJ64xRLRYS9Sb4gV4Hq0XghFKq7t01RIcpuVsqRJ-2s85Y1oIyipRv3t9J26a&tracking_referrer=www.theguardian.com).
phew, at least the rats havent been blamed for this one...... 8)