Declaration of competing interests
The authors declare that they have no known competing financial
interests or personal relationships that could have appeared to
influence the work reported in this paper.
Acknowledgments : Authors are thankful to Dra Lucia Vicenta
Cavallaro for support on virology aspects related to COVID-19. We are
also grateful to Biobanco de Enfermedades Infecciosas Colección COVID19
working group: Yesica Longueira, Horacio Salomon and Gabriela Turk for
collecting and providing the sera. This work was supported by the
Agencia Nacional de Promoción de la Investigación, el Desarrollo
Tecnológico y la Innovación (ANPCyT) (IP-COVID-19-209). SSB, AT, SCV,
MGL, OT, AMT, FJW, LGA, MF, SNV and MVM are career researchers of the
Consejo Nacional de Investigaciones Científicas y Técnicas de Argentina
(CONICET). IS, GJMC, JMB, JMM are research fellows of CONICET. ABS is
research fellow of UBA. JIM is research fellow of ANPCyT.