Our research over the last ten years has reliably and reproducibly demonstrated that viruses can remain infectious after tens of thousands of years of freezing (48,000 years) in deep permafrost [1-3]. For obvious health safety reasons, our work was restricted to viruses infecting amoebae, but there is no reason why this conclusion could not be applied to other DNA viruses (classified in the same phylum, such as poxviruses, iridoviruses, or asfarviruses) causing diseases in humans or animals...