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Tag CD4

COVID-19 and the gut

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which is the virus responsible for the coronavirus disease 2019 (COVID-19), has infected over 625 million to date and caused over 6.5 million deaths. Although COVID-19 is primarily a respiratory disease, it…

Metformin reduces risk of severe COVID-19 in diabetic patients

The coronavirus disease 2019 (COVID-19), which is caused by infection with the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), remains an urgent global public health crisis. Throughout the pandemic, individuals with chronic conditions, such as diabetes, are often at an…

Why fatigue from long COVID goes beyond simply feeling tired

In a recent study posted to the medRxiv* preprint server, researchers in the Netherlands examined the role of inflammatory genes, cytotoxic T-lymphocytes (CD8+  T cells), and pro-inflammatory cytokines in long-lasting severe fatigue experienced by a large number of coronavirus disease…

Mechanism of action of different COVID-19 vaccines

In a recent study posted to the bioRxiv* preprint server, researchers at the University of Tuebingen and Imperial College London assessed humoral and cellular immune responses elicited by the recombinant adenoviral vector (rAdVV)- and messenger ribonucleic acid (mRNA)-based coronavirus disease…