Influenza

Increased rates of certain infections, such as influenza, gastroenteritis, hepatitis and pneumonia, appeared associated with an eventual cancer diagnosis, according to research published in Cancer Immunology Research.

A 10-year review of the Vaccine Adverse Events Reporting System demonstrated no new or unexpected concerns regarding vaccine safety among women who were vaccinated during pregnancy.

Data from two test-negative design studies demonstrated similar vaccine effectiveness with a cell culture-based inactivated influenza vaccine and a standard inactivated influenza vaccine against laboratory-confirmed influenza A/H1N1.

A cell-based quadrivalent influenza vaccine prevented more influenza-related hospitalizations and ED visits, all-cause hospitalizations and hospitalizations related to serious respiratory events compared with egg-based quadrivalent vaccines.

Greater influenza vaccination uptake correlated with state-level reductions in antibiotic use, according to findings published in Open Forum Infectious Diseases.

Few health care personnel in a large academic health system who requested a medical waiver for the influenza vaccine had a true medical contraindication, according to findings in Infection Control and Hospital Epidemiology.

A survey of 2,176 parents in the United States showed that 25.8% were hesitant about getting their children vaccinated against influenza — far more than the 6.1% who were hesitant about routine childhood vaccinations.

A phase 4 post-marketing study of RIV3, a recombinant trivalent influenza vaccine, demonstrated no safety concerns regarding its use in adults.

Reports of influenza-like-illness increased during early March in areas of New York State with increased COVID-19 diagnoses, despite average rates of laboratory confirmed influenza declining, according to findings in Clinical Infectious Diseases.

Influenza vaccination reduced the risk for influenza by more than 40%, with no effect on coronaviruses or other non-influenza respiratory viruses, according to a study assessing seasonal influenza and coronaviruses over seven seasons.