As the COVID-19 pandemic progresses, changing definitions and therapeutics regarding the
post-acute sequela of COVID-19, particularly long COVID, have become a subject of great …

Background Older adults are more susceptible to severe health outcomes for coronavirus
disease 2019 (COVID-19). Universal vaccination has become a trend, but there are still …

Background We estimated COVID-19 vaccine effectiveness against SARS-CoV-2 infection
and severe COVID-19 outcomes among individuals with immune-mediated inflammatory …

Abstract Background The SARS-CoV-2 virus elicited a major public concern worldwide
since December 2019 due to the high number of infections and deaths caused by COVID …

Background COVID-19 vaccines have proven safe and efficacious in reducing severe illness
and death. Cuban protein subunit vaccine Abdala has shown safety, tolerability and efficacy …

Objective: To determine risk factors for the development of long coronavirus disease 2019
(COVID-19) in healthcare personnel (HCP). Methods: We conducted a case–control study …

Importance Patients with cancer have an increased risk of severe disease and mortality from
COVID-19, as the disease and antineoplastic therapy cause reduced vaccine …

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the causative agent of
the devastating global COVID-19 pandemic announced by WHO in March 2020. Through …

Prime-boost regimens for COVID-19 vaccines elicit poor antibody responses against
Omicron-based variants and employ frequent boosters to maintain antibody levels. We …

Objective To summarise the available evidence on the risk of myocarditis and/or pericarditis
following mRNA COVID-19 vaccination, compared with the risk among unvaccinated …