Background Bell's palsy is a rare adverse event reported in clinical trials of COVID-19
vaccines. However, to our knowledge no population-based study has assessed the association …

… We appreciate Tsun Lai and colleagues' (1) efforts to show an increased risk for carditis
associated with BNT162b2 vaccination as compared with an inactivated virus vaccine. Carditis …

Aims This study aims to evaluate the short- and long-term associations between COVID-19
and development of cardiovascular disease (CVD) outcomes and mortality in the general …

Prior research using electronic health records for Covid-19 vaccine safety monitoring typically
focuses on specific disease groups and excludes individuals with multimorbidity, defined …

Background Evidence on post-acute sequelae of SARS-CoV-2 (PASC) has shown inconsistent
findings. This study aimed to generate coherent evidence on the post-acute sequelae of …

Objectives To investigate the relationship between COVID-19 full vaccination (two completed
doses) and possible arthritis flare. Methods Patients with rheumatoid arthritis (RA) were …

Background: Whether hospitalized patients benefit from COVID-19 oral antivirals is uncertain.
Objective: To examine the real-world effectiveness of molnupiravir and nirmatrelvir–…

Data regarding protection against mortality and severe complications after Omicron BA.2
infection with CoronaVac and BNT162b2 vaccines remains limited. We conducted a case–…

Background Stimulation of immunity by vaccination may elicit adverse events. There is currently
inconclusive evidence on the relationship between herpes zoster related hospitalization …

Background This study aims to evaluate the association between thromboembolic events
and hemorrhagic stroke following BNT162b2 and CoronaVac vaccination. Methods Patients …