FDA Approves a High Dose Seasonal Influenza Vaccine Specifically Intended for People Ages 65 and Older

/PRNewswire/ -- The U.S. Food and Drug Administration today approved Fluzone High-Dose, an inactivated influenza virus vaccine for people ages 65 years and older to prevent disease caused by influenza virus subtypes A and B.

People in this age group are at highest risk for seasonal influenza complications, which may result in hospitalization and death. Annual vaccination remains the best protection from influenza, particularly for people 65 and older.

Fluzone High-Dose was approved via the accelerated approval pathway. FDA's accelerated approval pathway helps safe and effective medical products for serious or life-threatening diseases become available sooner. In clinical studies, Fluzone High-Dose demonstrated an enhanced immune response compared with Fluzone in individuals 65 and older.

As part of the accelerated approval process, the manufacturer is required to conduct further studies to verify that the Fluzone High-Dose will decrease seasonal influenza disease after vaccination.

"As people grow older, their immune systems typically become weaker," said Karen Midthun, M.D., acting director of the FDA's Center for Biologics Evaluation and Research. "This is the first influenza vaccine that uses a higher dose to induce a stronger immune response that is intended to better protect the elderly against seasonal influenza."

Fluzone High-Dose, manufactured by Sanofi Pasteur Inc., is formulated so that each 0.5 mL dose contains a total of 180 micrograms (mcg) of influenza virus hemagglutinin (HA) which is made up of 60 mcg of each of the three influenza virus strains.

Other currently licensed seasonal influenza vaccines for adults are formulated to contain a total of 45 mcg of influenza virus hemagglutinin (15 mcg HA from each of the three influenza strains per dose). Sanofi Pasteur, also manufactures Fluzone, a seasonal vaccine for the United States approved for use in individuals ages 6 months and older.

As expected, because of the higher HA content, non-serious adverse events were more frequent after vaccination with Fluzone High-Dose compared with Fluzone. Common adverse events experienced during clinical studies included pain, redness and swelling at the injection site and headache, muscle aches, fever and malaise. The rate of serious adverse events was comparable between Fluzone High-Dose and Fluzone.

People with hypersensitivity to egg proteins or life-threatening reactions after previous administration of any influenza vaccine should not be vaccinated with Fluzone High-Dose.

Fluzone High-Dose is administered as a single injection in the upper arm and is available in single dose pre-filled syringes without preservative.

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FDA Approves New Influenza Vaccine Production Facility

The U.S. Food and Drug Administration (FDA) today announced that it has approved a new manufacturing facility used to produce influenza virus vaccines. The facility is approved for seasonal influenza vaccine production and could be used for the production of vaccine against the new 2009 H1N1 influenza strain.

As part of its overall pandemic influenza preparedness efforts, the FDA meets with vaccine manufacturers to guide the efficient establishment of influenza vaccine facilities that comply with agency requirements. The agency promptly reviews applications and manufacturing supplements that could increase both the number of manufacturers and the overall supply of vaccine.

The facility, located in the United States, is owned and operated by sanofi pasteur, which manufactures Fluzone Influenza Virus Vaccine. This new facility will greatly increase sanofi pasteur’s production capability.

“This approval represents an important step towards increasing the availability of influenza vaccines,” said Karen Midthun, M.D., the FDA’s acting director of the Center for Biologics Evaluation and Research.

“Increased manufacturing capacity for influenza vaccine is critical to our preparedness for an influenza pandemic,” said Jesse Goodman, M.D., M.P.H., the FDA’s acting chief scientist and deputy commissioner for scientific and medical programs. “This action also enhances the ability to produce and provide vaccines to protect the public from seasonal influenza, still estimated to cause more than 30,000 deaths per year. Thanks to strategic investments by the federal government and proactive efforts and engagement by the FDA and the vaccine industry, our nation’s preparedness has come a long way over the last five years.”

The FDA has interacted with the company throughout the regulatory process to help ensure compliance with applicable requirements.

The bulk manufacturing facility will be used for the production of Fluzone, sanofi pasteur’s egg-based influenza vaccine.

Sanofi Pasteur is located in Swiftwater, Pa.

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