Vaccines and gut microbes join forces to fight flu
Gastrointestinal bacteria strengthen protection against influenza virus after immunization
![bacterium with flagellum](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2014/09/na_9995_Peggy-S_free.jpg?fit=860%2C460&ssl=1)
FLAGELLA FORTIFICATION Bacteria with propulsive tails called flagella bolster immunity in mice after influenza vaccination.
Peggy S. Hayes/CDC