A degraded/dysfunctional immune system appears to be the main determinant of
serious/fatal reaction to viral infection (for COVID-19, SARS, and influenza alike). There are …

Non-specific protective effects of certain vaccines have been reported, and long-term
boosting of innate immunity, termed trained immunity, has been proposed as one of the …

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

ABSTRACT Every year, influenza causes 290.000 to 650.000 deaths worldwide and
vaccination is encouraged to prevent infection in high-risk individuals. Interestingly, cross …

Background A possible protective effect of seasonal influenza vaccination against the
spread of the COVID-19 epidemic has been suggested. Methods We used publicly available …

Aims and objectives: The pandemic of COVID-19 is evolving worldwide, and it is associated
with high mortality and morbidity. There is a growing need to discuss the elements of a …

Demand for influenza vaccine rose as countries prepared for the second COVID-19 wave
over the winter months of 2020-2021. High coverage of the influenza vaccine can …

The factors affecting COVID-19 infection risk and disease severity have been widely
discussed. The role that seasonal influenza vaccinations may play is generally not included …

Abstract Coronavirus Disease 2019 (COVID-19) pandemic is still on-going worldwide. The
available information regarding the seasonal influenza vaccine (SIV) coverage during the …

Background: Crowdsourcing is a useful way to rapidly collect information on COVID-19
symptoms. However, there are potential biases and data quality issues given the population …