Viviana Loria, Amada Aparicio, Allan Hildesheim, Bernal Cortés, Gloriana Barrientos, Daniela Retana, Kaiyuan Sun, Rebeca Ocampo, D Rebecca Prevots, Michael Zúñiga, Tim Waterboer, Roy Wong-McClure, Melvin Morera, Julia Butt, Marco Binder, Arturo Abdelnour, Alejandro Calderón, Mitchell H Gail, Ruth M Pfeiffer, Cristina Barboza Solís, Romain Fantin, Juan Carlos Vanegas, Rachel Mercado, Carlos Ávila, Carolina Porras, Rolando Herrero
PURPOSE: The RESPIRA cohort aims to describe the nature, magnitude, time course and efficacy of the immune response to SARS-CoV-2 infection and vaccination, population prevalence, and household transmission of COVID-19. PARTICIPANTS: From November 2020, we selected age-stratified random samples of COVID-19 cases from Costa Rica confirmed by PCR. For each case, two population-based controls, matched on age, sex and census tract were recruited, supplemented with hospitalised cases and household contacts...
December 9, 2023: BMJ Open