Zombie viruses are hiding under the ice. Who are they threatening?

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.