“We’re mostly immune.”
complete bullshit ... we get small outbreaks of Yersinia pestis nearly every summer near where i live in Colorado where idiots let their dogs run wild in plague-infested prairie dog colonies ... if the idiots are not quickly treated with antibiotics they die a horrible death ...
https://www.cdc.gov/plague/index.html
https://www.cdc.gov/plague/index.html
the African outbreak is because of indescribably filthy living conditions that promote epidemics of host rats and their parasitic fleas, which carry and spread Yersinia pestis ...
DiNozzo got it on NCIS.