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Ageing and inflammation limit the induction of SARS-CoV-2-specific CD8+ T cell responses in severe COVID-19.
JCI Insight
January 2025
CNRS UMR 5164, INSERM ERL 1303, ImmunoConcEpT, University of Bordeaux, Bordeaux, France.
CD8+ T cells are critical for immune protection against severe COVID-19 during acute infection with SARS-CoV-2. However, the induction of antiviral CD8+ T cell responses varies substantially among infected people, and a better understanding of the mechanisms that underlie such immune heterogeneity is required for pandemic preparedness and risk stratification. In this study, we analyzed SARS-CoV-2-specific CD4+ and CD8+ T cell responses in relation to age, clinical status, and inflammation among patients infected primarily during the initial wave of the pandemic in France or Japan.
View Article and Find Full Text PDFDisproportionate, differential and targeted treatment: people who use drugs' experiences of policing during the COVID-19 pandemic.
Health Justice
January 2025
Burnet Institute, Melbourne, Australia.
Background: During the COVID-19 pandemic, governments worldwide introduced law enforcement measures to deter and punish breaches of emergency public health orders. For example, in Victoria, Australia, discretionary fines of A$1,652 were issued for breaching stay-at-home orders, and A$4,957 fines for 'unlawful gatherings'; to date, approximately 30,000 fines remain outstanding or not paid in full. Studies globally have revealed how the expansion of policing powers produced significant collateral damage for marginalized populations, including people from low-income neighboorhoods, Indigenous Peoples, sex workers, and people from culturally diverse backgrounds.
View Article and Find Full Text PDFIdentification of an immunological signature of long COVID syndrome.
Front Immunol
January 2025
Neuroimmunology Unit, Santa Lucia Foundation IRCCS, Rome, Italy.
Introduction: Acute COVID-19 infection causes significant alterations in the innate and adaptive immune systems. While most individuals recover naturally, some develop long COVID (LC) syndrome, marked by persistent or new symptoms weeks to months after SARS-CoV-2 infection. Despite its prevalence, there are no clinical tests to distinguish LC patients from those fully recovered.
View Article and Find Full Text PDFInvestigating the relationship between the immune response and the severity of COVID-19: a large-cohort retrospective study.
Front Immunol
January 2025
Physics Department, International School for Advanced Studies (SISSA), Trieste, Italy.
The COVID-19 pandemic has left an indelible mark globally, presenting numerous challenges to public health. This crisis, while disruptive and impactful, has provided a unique opportunity to gather precious clinical data extensively. In this observational, case-control study, we utilized data collected at the Azienda Sanitaria Universitaria Friuli Centrale, Italy, to comprehensively characterize the immuno-inflammatory features in COVID-19 patients.
View Article and Find Full Text PDFPossible mechanisms of spermatogenic dysfunction induced by viral infections: Insights from COVID-19.
Reprod Med Biol
January 2025
Division of Urology, Department of Organs Therapeutics Kobe University Graduate School of Medicine Kobe Japan.
Background: As the COVID-19 pandemic nears resolution in 2024, the mechanisms by which SARS-CoV-2 and other viral infections induce spermatogenic dysfunction remain poorly understood. This review examines the mechanisms by which viral infections, particularly COVID-19, disrupt spermatogenesis and highlights the implications for male reproductive health. While reports suggest that spermatogenic dysfunction caused by COVID-19 is mild and transient, these findings may have broader applications in understanding and treating spermatogenic dysfunction caused by future viral infections.
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