Background Elucidating the role of T cell responses in COVID-19 is of utmost importance to
understand the clearance of SARS-CoV-2 infection. Methods 30 hospitalized COVID-19 …

Background: The outbreak of coronavirus disease 2019 (COVID-19) caused by severe acute
respiratory syndrome coronavirus 2 (SARS-CoV-2) has posed great threat to human health …

Background T‐cell lymphopenia and functional impairment is a hallmark of severe acute
coronavirus disease 2019 (COVID‐19). How T‐cell numbers and function evolve at later …

COVID-19 has been widely spreading. We aimed to examine adaptive immune cells in non-
severe patients with persistent SARS-CoV-2 shedding. 37 non-severe patients with …

COVID-19 is being extensively studied, and much remains unknown regarding the long-term
consequences of the disease on immune cells. The different arms of the immune system are …

Several COVID-19 convalescents suffer from the post-acute COVID-syndrome (PACS)/long
COVID, with symptoms that include fatigue, dyspnea, pulmonary fibrosis, cognitive …

Background The host immune response has a prominent role in the progression and
outcome of SARS-CoV-2 infection. Lymphopenia has been described as an important …

BACKGROUND Marked progress is achieved in understanding the physiopathology of
coronavirus disease 2019 (COVID-19), which caused a global pandemic. However, the …

Background We observe changes of the main lymphocyte subsets (CD16+ CD56, CD19,
CD3, CD4, and CD8) in COVID-19-infected patients and explore whether the changes are …

Background Emerging studies indicate that some coronavirus disease 2019 (COVID-19)
patients suffer from persistent symptoms, including breathlessness and chronic fatigue; …