RT Journal Article T1 Incidence of COVID-19 in patients under chronic treatment with hydroxychloroquine. T2 Incidencia de la COVID-19 en pacientes en tratamiento crónico con hidroxicloroquina. A1 Tejada Cifuentes, Francisco A1 Lloret Callejo, Ángeles A1 Tirado Peláez, María José A1 Rubio Pulido, Olga A1 Ruiz-Morote Aragón, Marta A1 Fernández Urrusuno, Rocío A1 Muñoz Carreras, María Isabel A1 Méndez Esteban, María Isabel A1 Maestre Sánchez, Victoria A1 García Bonilla, Antonio A1 Paredero Dominguez, José Manuel A1 Arroyo Pineda, Virginia A1 Marco Tejón, Esther A1 Romero Candel, Gregorio A1 Fernández Marchante, Ana Isabel A1 Marco Del Rio, José A1 Ortiz Martín, Teresa A1 López Sánchez, Piedad K1 COVID-19 K1 Coronavirus K1 Hidroxicloroquina K1 Hydroxychloroquine K1 Incidence K1 Incidencia K1 Tratamiento K1 Treatment AB To analyze the incidence of Covid-19 in patients who are chronic users of hydroxychloroquine. Cross-sectional retrospective observational multicenter study in health areas and districts from Castilla La-Mancha and Andalucia. Of the 4451 participants included in the first recruitment, 3817 with valid data were selected. The main variable of the study is the presence or absence of Covid-19 infection by clinical, serological or polymerase chain reaction diagnosis. Sociodemographic and clinical variables and treatment and concomitant comorbidities were recorded. 169 (4,45%) patients had Covid-19 infection, of which 12 (7.1%) died and 32 (18.9%) required hospital admission. Previous respiratory pathology was related to Covid-19 infection (P There is no relationship between chronic use of hydroxychloroquine and the incidence of Covid-19. YR 2020 FD 2020-11-06 LK http://hdl.handle.net/10668/16780 UL http://hdl.handle.net/10668/16780 LA en LA es DS RISalud RD Apr 5, 2025