Background: Whether hospitalized patients benefit from COVID-19 oral antivirals is uncertain. Objective: To examine the real-world effectiveness of mo...Read more

Data regarding protection against mortality and severe complications after Omicron BA.2 infection with CoronaVac and BNT162b2 vaccines remains limited...Read more

Background: Observable symptoms of Bell's palsy following vaccinations arouse concern over the safety profiles of novel coronavirus disease 2019 (COVI...Read more

Importance: COVID-19 has required universities to rapidly develop vaccination policies for students and staff, yet little is known about the preferenc...Read more

Antibiotics may increase the risk of COVID-19 among non-vaccinated subjects via probable gut dysbiosis. We aimed to investigate whether antibiotics al...Read more

BACKGROUND: This study aims to evaluate waning effectiveness against severe and fatal COVID-19 with two to three doses of CoronaVac/BNT162b2, where da...Read more

Researchers from the Department of Pharmacology and Pharmacy of the LKS Faculty of Medicine at The University of Hong Kong found intramuscular olanzap...Read more

Background: The World Health Organization has defined a list of adverse events of special interest (AESI) for safety surveillance of vaccines. AESI ha...Read more

Identifying effective drug treatments for COVID-19 is essential to reduce morbidity and mortality. Although a number of existing drugs have been propo...Read more

BACKGROUND: Inactivated, whole-virion vaccines have been used extensively in the SARS-CoV-2 pandemic. Its efficacy and effectiveness across regions ha...Read more

Background: Antibiotics may increase the risk of COVID-19 among non-vaccinated subjects via probable gut dysbiosis. We aimed to investigate whether an...Read more

Severe COVID-19 appears to be disproportionately more common in children and adolescents since the emergence of Omicron. More evidence regarding vacci...Read more

Introduction: In Hong Kong, CoronaVac and BNT162b2 have been approved for emergency use owing to the coronavirus disease 2019 (COVID-19) pandemic. Rea...Read more

Background: Stimulation of immunity by vaccination may elicit adverse events. There is currently inconclusive evidence on the relationship between her...Read more

Background People with substance use disorder have a high risk of SARS-CoV-2 infection and subsequent poor outcomes. Few studies have evaluated COVID-...Read more

BACKGROUND: In view of limited evidence that specifically addresses vaccine effectiveness (VE) in the older population, this study aims to evaluate th...Read more

Background: Multimorbidity is a prevalent risk factor for COVID-19–related complications and death. We sought to evaluate the association of homologou...Read more

Aims: Concern about the cardiovascular safety of coronavirus disease 2019 (COVID-19) vaccines among individuals with cardiovascular disease (CVD) may ...Read more