During the 2021-2022 season, influenza vaccination did not reduce the risk for outpatient medically attended illness with influenza A(H3N2) viruses that have predominated this season.
Researchers conducted a study to compare hospitalizations due to COVID-19 infection plus multisystem inflammatory syndrome with those due to influenza and respiratory syncytial virus infection among children between 5 and 11 years.
Researchers conducted a study to determine whether homologous COVID-19 vaccination increases in vitro neutralizing activity against seasonal human coronaviruses.
How well do influenza vaccines protect children against critical and life-threatening illness when vaccines are mismatched with the virus?
Influenza vaccine effectiveness was 75% against life-threatening influenza in children during the 2019 to 2020 season, when vaccine-mismatched viruses predominated.
During a season predominated by 2 vaccine-mismatched viruses, vaccination was estimated to reduce the risk of life-threatening influenza illness by 75%.
Close to 30% of reproductive-aged women hospitalized with influenza were pregnant during the 2010-2011 through 2018-2019 influenza seasons.
This season’s flu vaccine may do little to prevent infection with the main circulating virus strain because the strain has changed since the vaccine was developed.
Researchers conducted a study to assess the efficacy of the NVX-CoV2373 COVID-19 vaccine when co-administered with a seasonal influenza vaccine.
Researchers conducted a meta-analysis to determine the effectiveness of N95 respirators vs surgical masks in protecting against viral respiratory illness transmission.
