The BNT162b2 vaccine against coronavirus disease 2019 (Covid-19) has been authorized for use in children 5 to 11 years of age and adolescents 12 to 17 years of age but in different antigen doses. We assessed the real-world ...

Although increasing numbers of studies have examined online teaching in the last decade, examination during a crisis context is rare. This study fills this critical gap and is a rapid response research to suggest insights ...

The aim of this research is to model and simulate the recent and ongoing COVID-19 pandemic in terms of virus contagiousness among mixed groups of patients, carriers, and unaffected populations. The focus is on closed ...

This study examines how students and teachers perceive science, mathematics, engineering and technology (STEM) learning during the COVID-19 pandemic. Data was collected through student and teacher surveys, conducted in 22 ...

Objectives: Infection control measures during the Covid-19 pandemic have focused on limiting physical contact and decontamination by observing cleaning and hygiene rituals. Breastfeeding requires close physical contact and ...

In early 2021, Qatar launched a mass immunization campaign with the mRNA-1273 (Moderna)1 vaccine against coronavirus disease 2019 (Covid-19).2 We assessed the persistence of real-world vaccine effectiveness against severe ...