Bielza Galindo, RafaelPérez, PatriciaGarcía, NuriaBallesteros Sanabria, LauraMartínez, Rosa MaríaGhazi, AzamHernando, ClaraRodríguez, María VictoriaThuissard Vasallo, Israel JohnAndreu Vázquez, CristinaEt al.2025-01-032025-01-032024Bielza, R., Pérez, P., García, N., Ballesteros-Sanabria, L., Martínez, R. M., Ghazi, A., Hernando, C., Rodríguez, M. V., Thuissard, I. J., Andreu-Vázquez, C., & Bautista, J. M. (2024). Unravelling the role of secretory Immnuoglobulin-A in COVID-19: A multicentre study in nursing homes during the first wave. BMC Geriatrics, 24(1), 804. https://doi.org/10.1186/s12877-024-05402-61471-2318http://hdl.handle.net/11268/13388The function of mucosal secretory IgA (SIgA) seems to be paramount in the immune response against SARS-CoV-2 however, there are few studies addressing this issue specifically in the institutionalized older population. This study aims to determine the levels of secretory IgA against the S1 domain of the SARS-CoV-2 spike (SIgA-S1) in older people living in nursing homes (NH) and to investigate the differences in baseline characteristics, severity of COVID-19, duration of symptoms, 30-day mortality, and reinfection according to the levels of SIgA-S1.engAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp:// creativecommons.org/licenses/by-nc-nd/4.0/.journal article10.1186/s12877-024-05402-6open accessPandemiaInmunologíaAncianoGoal 3: Ensure healthy lives and promote well-being for all at all agesGoal 4: Quality education