Abstract Introduction Health care workers (HCWs) have been at increased risk of infection
during the SARS-CoV-2 pandemic and as essential workers have been prioritised for …

SARS-CoV-2 vaccination is currently the mainstay in combating the COVID-19 pandemic.
However, there are still people among vaccinated individuals suffering from severe forms of …

Introduction While antibodies raised by SARS-CoV-2 mRNA vaccines have had
compromised efficacy to prevent breakthrough infections due to both limited durability and …

Since March 2020, the COVID-19 pandemic has swiftly propagated, triggering a competitive
race among medical firms to forge vaccines that thwart the infection. Lebanon initiated its …

Background Although there have been reports of COVID-19 breakthrough infections in
vaccinated individuals, the vaccines have demonstrated a high efficacy in preventing severe …

ABSTRACT Introduction: Health care workers (HCWs) have been at increased risk of
infection during the SARS-CoV-2 pandemic and as essential workers have been prioritised …

Background and aim The COVID-19 pandemic has globally impacted all sectors. Early
vaccine development was crucial to curb the spread of the virus. However, concerns about …

Background: While vaccines were one of the most effective tools to combat the COVID-19
pandemic, breakthrough infections have been reported. Aim of the work: We aim to evaluate …

Background We investigated the clinical manifestation and severity of COVID-19 infection
represented as a composite outcome (hospital or ICU admission, or in-hospital death) …

Background: The COVID-19 pandemic resulted in significant mortality and morbidity
globally. The introduction of various COVID-19 vaccines at record time generated hope …