Pre-existing T-cell immunity to SARS-CoV-2 in unexposed healthy controls in Ecuador, as detected with a COVID-19 Interferon-Gamma Release Assay

por Echeverría, Gustavo, Guevara, Ángel, Coloma, Josefina, Ruiz, Alison Mera, Vasquez, María Mercedes, Tejera, Eduardo, de Waard, Jacobus H.
Publicado 2021