NYT > World News Rare South American Diseases Offer Clues on the Next Pandemic Par : Zane Irwin · Lucía Cholakian Herrera and Sebastián López Brach 21 août 2026 à 05:00 Ebola virus, hantavirus and the pathogen that causes Covid-19 likely jumped from animals to humans. So do these viruses — and scientists say climate change is speeding their spread. © Sebastián López Brach for The New York TimesPreparing a dose of the Candid #1 vaccine against Argentine hemorrhagic fever at Carrasco Hospital in Rosario, Argentina.