The emergence of breakthrough infections and new highly contagious variants of SARS-
CoV-2 threaten the immunization in individuals who had completed the primary COVID-19 …

In December 2021, the B. 1.1. 529 (Omicron) variant of SARS-CoV-2, the virus that causes
COVID-19, became predominant in the United States. Subsequently, national COVID-19 …

Background Hand hygiene, facemask wearing, and physical distancing play a crucial role in
the prevention of the COVID-19 pandemic. Identifying the key psychosocial determinants of …

Importance Recommendations for additional doses of COVID-19 vaccines for people with
HIV (PWH) are restricted to those with advanced disease or unsuppressed HIV viral load …

Background: Control measures adopted during the COVID-19 pandemic had a considerable
impact on human daily life and lifestyles. Adherence to the recommended measures is …

Importance Social restrictions intended to limit the transmission of SARS-CoV-2 may have
also been associated with decreased rates of other communicable diseases. Evidence …

Policy and communication responses to COVID-19 can benefit from better understanding of
people's baseline and resulting beliefs, behaviours and norms. From July 2020 to March …

Vaccine hesitancy has taken a toll on COVID-19 immunization globally. This study aims to
characterize three COVID-19-related health concerns (ie, vaccine hesitancy, anticipated …

The COVID-19 pandemic has resulted in changes in healthcare use. This study aimed to
identify factors associated with a patient's decision to avoid and/or delay healthcare during …

Background The COVID-19 pandemic hit Italy much harder than South Korea. As a way of
explaining the different impact in the two countries, this study examines the moderating role …