Protein Sciences Corporation announced today that the U.S. FDA has approved Flublok® influenza vaccine for all adults aged 18 years and older, granting approval for use in people 50 and older under the accelerated approval of biological products regulations, 21 CFR 601.40-46.

Flublok is the only licensed flu vaccine that is made using modern recombinant technology and the only flu vaccine that is 100% egg-free and highly purified. It also contains three times more active ingredients than traditional flu vaccines. The expanded age indication means Flublok is now available for everyone over 50 who has been waiting patiently to receive his or her vaccine.