New study shows 17 years of potential T cell immunity in SARS-infected patients
God has a way of prepping the human body for potentially deadly viruses to somewhat mitigate the amount of death we’d otherwise suffer every year from all sorts of microbiological threats. COVID-19 is not different.
The latest research on T cells, white blood cells produced by the immune system to ward off infections through memory of past pathogens, show that even those patients who never develop antibodies or have lost them over time will retain T cell immunity that remembers to fight off coronaviruses in the future. Moreover, the study provides new evidence for the theory that herd immunity could be achieved at an approximately 20% infection rate for most cities, thanks to T cell cross-immunity from other coronaviruses.