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http://dx.doi.org/10.1002/jmv.70345 | DOI Listing |
Immunol Lett
September 2025
Department of Bacteriology and Immunology, Faculty of Medicine, University of Helsinki, Helsinki, Finland; Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland; HUS Diagnostic Center, Clinical Microbiology, Helsinki University Hospital, Helsinki,
Background: COVID-19 is still a significant health concern worldwide. B cell responses to COVID-19 have been extensively studied in acute severe disease, but less so during extended follow-up or mild disease. Persisting immunological changes together with herpesvirus reactivations during acute COVID-19 have been suggested as contributing factors for post-acute sequelae of COVID-19 (PASC).
View Article and Find Full Text PDFJ Infect Public Health
August 2025
Centers for Disease Control and Prevention, National Center for Immunizations and Respiratory Diseases, Atlanta, GA, USA.
Background: Long COVID, or Post-COVID Conditions (PCC), refers to new and persisting sequelae occurring in the months following an acute SARS-CoV-2 infection. Although previous studies have reported estimates of PCC incidence, few have examined trends during the Omicron variant period or have included geographically distinct regions for the same time periods.
Methods: Track PCC is a surveillance network, leveraging electronic health records and public health data to monitor incidence over time across five diverse geographic sites in the U.
Front Public Health
September 2025
Epidemiology Unit, Agency for Health Protection Milan, Milan, Italy.
Introduction: Post-acute sequelae of COVID-19 (PASC) encompass several clinical outcomes, from new-onset symptoms to both acute and chronic diagnoses, including pulmonary and extrapulmonary manifestations. Health administrative data (HAD) from health information systems allow population-level analyses of such outcomes. Our primary aim was to identify clinical conditions potentially attributable to SARS-CoV-2 infection, and the types of HAD and "diagnostic criteria" used for their detection.
View Article and Find Full Text PDFJ Virol
September 2025
School of Life and Environmental Sciences, The University of Sydney, Camperdown, New South Wales, Australia.
Unlabelled: The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike (S) protein mediates canonical cell entry via ACE2 and has also been implicated as an activator of a diverse range of signaling pathways. Here, we present evidence that the RGD (Arg-Gly-Asp) motif within the receptor-binding domain (RBD) of the S1 fragment of the S protein induces TGF-β cytokine expression. RGD peptides are well characterized as ligands for a subset of integrin complexes primarily containing α5 and αV subunits.
View Article and Find Full Text PDFBMC Infect Dis
September 2025
Aix Marseille University, AP-HM, SSA, RITMES, Marseille, France.
Background: Although post-COVID symptoms have been documented in the literature, the risk factors and time required for full recovery remain unclear. We conducted a retrospective analysis of medical records of COVID-19 patients to investigate the prevalence of symptoms after an acute episode of COVID-19 and the risk factors for persistence of symptoms.
Methods: This retrospective cohort study analysis examined hospital records of post-COVID individuals with previously confirmed or probable SARS-CoV-2 infection and endurring symptom continuation for at least 3 months post-infection or presenting new symptoms persisting for at least 2 months.