US researchers caution a mutant, exceptionally strong infectious coronavirus strain has developed Kumar Jeetendra | May 5, 2020 A group of US researchers drove by US-based Los Alamos National Laboratory has distinguished another, exceptionally strong strain of coronavirus that has spread internationally and is more infectious than the infection in beginning of the COVID-19 pandemic. Los Alamos National Laboratory (Los Alamos or LANL) is a US Department of Energy’s national lab at first …