Immune response to SARS- CoV-2:
The main aim of both innate and adaptive immune responses against viral infections, in general, is to block the viral infection and eliminate the infected cells (Fig. 1). Type I interferons secreted during innate immunity and neutralizing antibodies produced through adaptive immune system could prevent the viral infection. However, if the cells got already infected, then it is the role of the natural killer (NK) cells as a part of the innate immune system and the cytotoxic CD8 T cells of the adaptive immune system to eliminate them(25).