Palabras claves: covid-19, ELISPOT, Interferon-Gamma (IFN-γ) release assay (IGRA), Nucleocapsid protein, Pre-existing immunity, SARS-COV-2, Spike protein, T cells
Autores: Ángel Gustavo Guevara, Coloma J., Eduardo Tejera, Gustavo Echeverría, Jacobus H. de Waard, María Mercedes Vasquez, Patricia A. Mera-Ruiz