"Deadly Experiments: Investigating Fatal Illnesses and Lethal Viruses"
Scientists in China are experimenting with a mutant COVID strain with a 100% kill rate in mice, but experts caution that the study is small and not peer-reviewed. Other diseases with 100% or near-100% fatality rates include Creutzfeldt–Jakob disease, fatal familial insomnia, kuru, Gerstmann–Sträussler–Scheinker syndrome, and rabies, each with its own unique characteristics and challenges for treatment and management.