Gupta Lab: Delta variant emergence, replication and immune evasion Bad news from the Gupta Lab who have been looking at the Delta variant. More... July 17, 2021July 17, 2021 Coronaheadsup.com Africa, America, Asia, Australasia, B.1.617.2, Delta, Europe, Health, Infection, Recombination, Reinfection, Science, Symptoms, Transmission, Treatment, USA, Vaccine, Variants