The surprising discovery of entities smaller than viruses raises profound questions about what life is and how it got started ...

Introduction: Mayaro Fever (MF) is a tropical disease caused by the Mayaro virus (MAYV), with outbreaks documented in Latin America. Methods: A hospital-based fever surveillance in Leticia, Colombian ...

Ivan Zheludev, a biochemist at Stanford University and the first author of the paper, and his colleagues, classify these obelisks as viroid-like RNAs. Viroids themselves are only found in plants, so ...