Respiratory viruses represent the most frequent cause of mortality, morbidity and high
healthcare costs for emergency visits and hospitalization in the pediatric age. Respiratory …

Memory T cells form from the adaptive immune response to historic infections or
vaccinations. Some memory T cells have the potential to recognise unrelated pathogens like …

Importance Vaccine effectiveness studies have rarely implemented strategies to reduce the
healthy vaccinee bias arising from differences in health care–seeking behavior between …

Cross-reactive immunity between SARS-CoV-2 and other related coronaviruses has been
well-documented, and it may play a role in preventing severe COVID-19. Epidemiological …

While COVID-19 vaccines have been available since December 2020 and efforts have been
made to vaccinate the maximum population, a large number of people are continuing to be …

The clinical guideline states that COVID-19 vaccination can be administered concurrently
with Influenza (flu) vaccination (dual vaccination). Using data from the 2021 National Health …

Background Non-pharmaceutical interventions (NPIs) were implemented worldwide to
control the spread of SARS-CoV-2. Aim To evaluate the impact of tiered NPIs and a …

Due to the rapid development of COVID-19 vaccines, the world has faced a huge challenge
with their general acceptance, including Poland. For this reason, we attempted to determine …

Background: World Health Organization recommends that influenza vaccines should benefit
as much of the population as possible, especially where resources are limited. Corona virus …

Due to the prevailing pandemic of the coronavirus disease COVID-19, we are experiencing
emotional and social isolation, which negatively affects mental and physical health …