Background Vaccines are critical cost-effective tools to control the coronavirus disease 2019
(COVID-19) pandemic. However, the emergence of variants of the severe acute respiratory …

The development of effective vaccines to combat infectious diseases is a complex multi-year
and multi-stakeholder process. To accelerate the development of vaccines for coronavirus …

Background The prioritization of US health care personnel for early receipt of messenger
RNA (mRNA) vaccines against severe acute respiratory syndrome coronavirus 2 (SARS …

Several studies have utilized a lipid nanoparticle delivery system to enhance the
effectiveness of mRNA therapeutics and vaccines. However, these nanoparticles are …

Background Vaccination, one of the most important and effective ways of preventing
infectious diseases, has recently been used to control the COVID-19 pandemic. The present …

Evidence on COVID-19 vaccine efficacy/effectiveness (VE) in preventing asymptomatic
SARS-CoV-2 infections is needed to guide public health recommendations for vaccinated …

As the number of individuals vaccinated against SARS-CoV-2 rises worldwide, population-
level data regarding the vaccines' ability to reduce infection are being generated …

In December 2019, an outbreak emerged of severe acute respiratory syndrome coronavirus
2 (SARS-CoV-2) which leads to coronavirus disease 2019 (COVID-19). The World Health …

COVID-19 vaccine effectiveness was evaluated in close contacts of cases diagnosed during
January–April 2021. Among 20,961 contacts, 7,240 SARS-CoV-2 infections were confirmed …

Since the start of the COVID-19 pandemic there has been a global call for sex/gender-
disaggregated data to be made available, which has uncovered important findings about …