Background Since October 2021, multiple paediatric cases of severe acute hepatitis of
unknown aetiology (SAHUA) not caused by hepatitis A–E viruses have been reported by …

We intended to assess the humoral response induced by the Pfizer/BioNTech Comirnaty
COVID-19 vaccine with commercially available immunoassays: anti-spike (S) IgG and IgM …

Introduction: Pregnant and breastfeeding women comprise a high-risk group for the
development of severe COVID-19. Therefore, vaccination is highly recommended for …

Cardiometabolic diseases and abnormalities have recently emerged as independent risk
factors of coronavirus disease 2019 (COVID-19) severity, including hospitalizations, invasive …

Background Kidney transplant recipients (KTRs) commonly suffer from impaired immunity.
KTRs' compromised immune response to COVID-19 vaccines indicates urgent revision of …

Background: Community-acquired atypical pneumonia is generally a mild and self-limiting
infection. Still, it may lead to hospitalization and progressive clinical complications in some …

Background: Limited information is currently available regarding the global incidence of
severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections prior to the …

Background We aimed to measure the seroprevalences and levels of anti-SARS-CoV-2 IgG
in children, unvaccinated and vaccinated adults in five districts of Bangladesh and thus …

Background Several published data on the dialysis population showed that antibody levels
decreased after COVID-19 vaccinations in comparison to the overall population. We aimed …

BACKGROUND: The coronavirus disease 2019 (COVID-19) pandemic has had a massive
impact on public health as well as the economy. Understanding the seroprevalence of …