during the first 8 days of the virus entering the body. Variants of the virus differ in their transmissibility, and this may be due to differences in the body’s ability to respond to them during this period.The body’s initial response to the SARS-CoV-2 infection involves the activation of the innate immune response, which is rapid and not specific to any particular virus.
Thus, to understand the differences in transmissibility of SARS-CoV-2 variants, it is essential to characterize the interaction between the virus and the innate immune system.After entering the body, SARS-CoV-2 initially replicates in the upper respiratory tract.