There is an established literature on the symptoms and complications of COVID‐19 but the
after‐effects of COVID‐19 are not well understood with few studies reporting persistent …

Objective To review and qualitatively synthesize the evidence related to the economic
burden of COVID-19, including healthcare resource utilization and costs. Methods A …

Background This study applies an umbrella review approach to summarise the global
evidence on the risk of severe COVID-19 outcomes in patients with pre-existing health …

Objectives To investigate the risk factors contributing to severity on admission. Additionally,
risk factors of worst severity and fatality were studied. Moreover, factors were compared …

Introduction and objectives The coronavirus disease 2019 (COVID-19) pandemic has been
a challenge globally. In severe acute respiratory syndrome (SARS) epidemic 60% of …

BACKGROUND Coronavirus disease 2019 (COVID-19) has left a significant impact on the
world's health, economic and political systems; as of November 20, 2020, more than 57 …

On January 2020, WHO confirmed the epidemic outbreak of SARS-CoV-2 as a Health
Emergency of International Concern. The aim of this meta-meta-analysis is quantifying meta …

Background: The COVID-19 pandemic, which affected the entire global population, had an
impact on our health and quality of life. Many people had complications, were hospitalised …

COVID-19 due to novel Coronavirus was first reported in Wuhan, China. Nowadays, the
Islamic Republic of Iran stands among countries with high COVID-19 prevalence and high …

Objectives To identify early indicators for invasive mechanical ventilation utilization among
COVID-19 patients. Methods This retrospective study evaluated COVID-19 patients who …