The rapid spread of SARS-CoV-2 continues to impact humanity on a global scale with rising
total morbidity and mortality. Despite the development of several effective vaccines, new …

Background More effective vaccine candidates against variants of concern as a booster
dose are needed in people primed with two-dose inactivated COVID-19 vaccines. Methods …

Background Available data show that COVID-19 vaccines may be less effective in
immunocompromised populations, who are at increased risk of severe COVID-19 …

Summary Background Aerosolised Ad5-nCoV is the first approved mucosal respiratory
COVID-19 vaccine to be used as a booster after the primary immunisation with COVID-19 …

We analyzed published studies on the efficacy and safety of the third dose of the COVID‐19
vaccine in various general population settings. We conducted systematic searches of …

Coronavirus disease 2019 (COVID-19) is the biggest health challenge of the 21st century,
affecting millions of people globally. The outbreak of severe acute respiratory syndrome …

Background We studied humoral responses after coronavirus disease 2019 (COVID-19)
vaccination across varying causes of immunodeficiency. Methods Prospective study of fully …

Background The continued occurrence of more contagious Severe Acute Respiratory
Syndrome Coronavirus 2 (SARS-CoV-2) variants and waning immunity over time require …

ABSTRACT Introduction From July through October of 2021, several countries issued
recommendations for increased COVID-19 vaccine protection for individuals with one or …

Background Capsid virus-like particles (cVLP) have proven safe and immunogenic and can
be a versatile platform to counter pandemics. We aimed to clinically test a modular cVLP …