Amid an unusually strong flu season that the Centers for Disease Control and Prevention has called an epidemic, supplies of flu vaccines are running low, and some people hoping to get immunized are having trouble finding them.

The Food and Drug Administration on Wednesday announced the approval of Novartis' Flucelvax, the first seasonal influenza vaccine licensed in the United States produced using cultured animal cells, instead of fertilized chicken eggs.

An intranasal vaccine that includes four weakened strains of influenza could do a better job in protecting children from the flu than current vaccines, research released Tuesday by St. Louis University found.

Sanofi Pasteur, the vaccines division of Sanofi, released data from a new study examining the ability of its Fluzone High-Dose vaccine to provoke an immune response in elderly and younger adults, compared with a standard dose of Fluzone vaccine.

Sanofi’s vaccines division has won Food and Drug Administration approval for a vaccine designed for injection into the skin, the company said Tuesday.

The Department of Health and Human Services on Wednesday unveiled a new National Vaccine Plan to enhance coordination of all aspects of federal vaccine and immunization activities with the goal to ensure that all Americans can gain access to vaccines.

Despite concerns that this year's flu vaccine production will be affected by the recent salmonella...

Vaccines likely would work better in protecting children from flu if they included both strains...