Permafrost is melting, releasing viruses from tens of thousands of years ago. Such pathogens can infect humans. Contact with wild animals is a threat, as the recent pandemic has shown
Scientists in Marseille have been able to show that these viruses can become active again in the laboratory. In the study, they used Acanthamoeba castellanii - a type of amoeba - as bait for viruses. Result: All 13 viruses were infectious and infected amoebas.
