Type 1 interferon deficiency: Biomarker of patients at risk of severe COVID-19. Which patients are more likely to develop a severe form of COVID-19? In a new study, researchers describe a unique and unexpected immunological phenotype in severe and critical patients. Source 1i.
The basis of immunity is for the anitbody to recognize an antigen (A part of the virus). If the body fails to detect it immediately, it could cause serious and grave effects before it can mount a defense. It's like an insider slowly destroying and sabotaging and you don't know who it is making it.