Background: To date, coronavirus disease 2019 (COVID-19) becomes increasingly fierce
due to the emergence of variants. Rapid herd immunity through vaccination is needed to …

Background We aimed to quantitatively summarise the health economic evaluation
evidence of prevention and control programs addressing COVID-19 globally. Methods We …

It is urgently needed to update the comprehensive analysis about the efficacy or
effectiveness of COVID-19 vaccines especially during the COVID-19 pandemic caused by …

Purpose To evaluate the occurrence, extent, and severity of adverse reactions associated
with the vaccine of COVID-19 (ChAdOx1 nCoV-19 vaccine or AstraZeneca) among Kabul …

Background B. 1.1. 7 (alpha) and B. 1.617. 2 (delta) variants of concern for SARS-CoV-2
have been reported to have differential infectivity and pathogenicity. Difference in recovery …

Objectives To evaluate the cardiovascular safety of COVID-19 vaccines in the real world.
Methods Studies reported on any COVID-19 vaccine-related cardiovascular events in the …

Objectives: This umbrella meta-analysis aims to provide comprehensive and synthesized
evidence regarding the effectiveness and safety of COVID-19 vaccinations based on current …

The emergence of SARS-CoV-2 has led to the infection of many people across the globe,
over six million deaths, and has placed an unprecedented burden on public health …

Background COVID-19 is a respiratory illness caused by SARS-CoV-2. The most recent
variant is Omicron (line B. 1.1. 529), which was first identified in South Africa in November …

Background Over a dozen vaccines are in or have completed phase III trials at an
unprecedented speed since the World Health Organization (WHO) declared COVID-19 a …