Preprint: Infectivity and immune escape of the new coronavirus variant of interest C.37 Lambda

“We also observed that the spike protein of the Lambda variant presented increased infectivity when compared with the spike protein of the Alpha and Gamma variants, both of them with reported increased infectivity and transmissibility....More...

Denmark’s SSI: Even people with a very low amount of coronavirus are able to infect other household members

Impossible to set minimum limit for risk of infection

Based on laboratory studies, where Ct values ​​are compared with the ability to grow viruses in cell cultures, several researchers have proposed a “cut-off” or a minimum limit of the Ct value of 30 for infectiousness.… ...More...