The COVID-19 pandemic proceeds in waves, with variable characteristics of the clinical
picture resulting from the evolution of the SARS-CoV-2 virus. This study aimed to compare …

SARS-CoV-2, a novel coronavirus, causes respiratory tract infections and other
complications in affected individuals, and has resulted in numerous deaths worldwide. The …

Since the COVID‐19 pandemic began, various severe acute respiratory syndrome
coronavirus 2 variants have been identified with different characteristics than the nonvariant …

Children infected by SARS-CoV-2 Omicron variant may develop neurological complications.
To study the pathogenesis in the growing brain, we intranasally challenged newly-weaned …

Due to the deleterious global impact of the COVID‐19 pandemic, tremendous effort has
been invested in the development of vaccines against the virus. Vaccine candidates are first …

Methods A single-centre, prospective observational study was conducted on individuals
aged 0–20 years attending the University Hospital of Padua (Italy) from April 2020 to …

To compare the reactogenicity and immunogenicity between the two‐dose mRNA COVID‐
19 vaccine regimen and one or two doses of inactivated vaccine followed by an mRNA …

The clinical courses of COVID-19 in children are often mild and may remain undiagnosed,
but prolonged intestinal virus shedding has been documented, thus potentially enabling …

Introduction Following lockdown periods and restricting public health measures in response
to the COVID-19 pandemic, respiratory tract infections (RTIs) rose significantly worldwide …

The severe acute respiratory syndrome coronavirus 2 pandemic is characterized by the
emergence of novel variants of concern (VOCs) that replace ancestral strains. Here, we …