Several vaccines against coronavirus disease 2019 (COVID-19) are on the cusp of
regulatory approval. Their safety and efficacy in older people is critical to their success. Even …

Background The COVID-19 pandemic and global efforts to contain its spread, such as stay-
at-home orders and transportation shutdowns, have created new barriers to accessing …

Objective To estimate the direct and indirect effects of the covid-19 pandemic on mortality in
2020 in 29 high income countries with reliable and complete age and sex disaggregated …

Discussion| In this study, initial vaccine-elicited neutralizing antibody titers were negatively
associated with age, resulting in a diminished ability to neutralize SARS-CoV-2 in vitro …

Background Deaths directly linked to COVID-19 infection may be misclassified, and the
pandemic may have indirectly affected other causes of death. To overcome these …

Excess mortality studies provide crucial information regarding the health burden of
pandemics and other large-scale events. Here, we use time series approaches to separate …

Background: Currently, reported COVID-19 deaths are inadequate to assess the impact of
the pandemic on global excess mortality. All-cause excess mortality is a WHO …

In this paper, we measure the effect of the 2020 COVID-19 pandemic wave at the national
and subnational levels in selected Latin American countries that were most affected: Brazil …

Objective This meta-analysis compared the efficacy and safety of five kinds of COVID-19
vaccines in different age groups (young adults and older adults), aiming to analyze the …

Methods| The Oregon Health & Science University conducted large-scale vaccination of all
workforce members in accordance with Oregon vaccination guidelines between December …