Up to 81% of of the population can mount a strong response to COVID-19 without ever having been exposed to it before: Cross-reactive SARS-CoV-2 T-cell epitopes revealed preexisting T-cell responses in 81% of unexposed individuals, and validation of similarity to common cold human coronaviruses provided a functional basis for postulated heterologous immunity The SARS-CoV-2 pandemic … Continue reading SARS-CoV-2 T-cell epitopes define heterologous and COVID-19-induced T-cell recognition – Research Square