The global impact of the SARS-CoV-2 infection has been substantial, affecting millions of
people. Long COVID, characterized by persistent or recurrent symptoms after acute …

The duration and severity of COVID-19 are related to age, comorbidities, and cytokine
synthesis. This study evaluated the impact of these factors on patients with clinical …

Background: A novel coronavirus (SARS-CoV-2)-induced pneumonia (COVID-19) emerged
in December 2019 in China, spreading worldwide. The aim of the present investigation was …

Background The lack of knowledge regarding the pathogenesis and host immune response
during SARS-CoV-2 infection has limited the development of effective treatments. Thus, we …

Background The corona virus disease 2019 (COVID-19) shows unusually high transmission
rate and unique clinical characteristics, with key pathological mechanism remaining unclear …

Coronavirus disease 2019 (COVID-19), an acute respiratory infection, is largely associated
with dysregulation and impairment of the immune system. This study investigated how the …

Background: Dysregulation of the immune response in the course of COVID-19 has been
implicated in critical outcomes. Lymphopenia is evident in severe cases and has been …

Background Coronavirus disease 2019 (COVID-19) has posed a great threat to global
public health. There remains an urgent need to address the clinical significance of …

Introduction The objective of this study is to analyse the specific immune response against
SARS-CoV-2 in those affected by Long Covid (LC), attributable to T cells (cell-mediated …

Background The novel coronavirus disease (COVID-19) has been declared a global
pandemic, with the cumulative number of confirmed cases and deaths exceeding 150 …