The pandemic of the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
has been posing great threats to the world in many aspects. Effective therapeutic and …

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a highly transmissible
and pathogenic coronavirus that emerged in late 2019 and has caused a pandemic of acute …

Background The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic
has led to the development of various vaccines. Real-life data on immune responses elicited …

Background A vaccine against COVID-19 is urgently needed for older adults, in whom
morbidity and mortality due to the disease are increased. We aimed to assess the safety …

Objective We aimed to describe the associations of age and sex with the risk of COVID-19 in
different severity stages ranging from infection to death. Design Systematic review and meta …

Limited initial supply of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
vaccine raises the question of how to prioritize available doses. We used a mathematical …

Chronological age is a risk factor for SARS-CoV-2 infection and severe COVID-19. Previous
findings indicate that epigenetic age could be altered in viral infection. However, the …

Abstract Since coronavirus disease-2019 (COVID-19) outbreak in January 2020, several
pieces of evidence suggested an association between the spectrum of Guillain–Barré …

Background The study objective was to conduct a systematic review and meta-analysis on
the proportion of asymptomatic infection among coronavirus disease 2019 (COVID-19) …

Background and purpose The objective of our systematic review is to identify prognostic
factors that may be used in decision-making related to the care of patients infected with …