6.3 (95% CI 1.9–21.5) times more aerosol shedding among cases with vaccination in the current and previous season compared with having no vaccination in those two seasons.

The latest addition to this growing body of literature is found in a newly published article titled, “Infectious Virus Exhaled In Breath Of Symptomatic Seasonal Flu Cases,” published in PNAS (Proceedings of the National Academy of Science).

The study found that flu carriers exhale significant quantities of infectious influenza virus, and that counter intuitively, sneezing is rare and not important for influenza virus aerosolization; nor is coughing required to transmit these particles. Simply breathing will do. Additionally, the study found that males shed influenza viruses in greater quantity than females through fine aerosols, and women cough more frequently. READ MORE..