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A high-dose vaccine (Fluzone High-Dose) four times the strength of standard flu vaccine was approved by the FDA in 2009. [22] [23] [24] This vaccine is intended for people 65 and over, who typically have weakened immune response due to normal aging. The vaccine produces a greater immune response than standard vaccine.
Doctors explain common flu shot side effects, like fever, headache, nausea—and why it's still worth getting the vaccine despite low risks of feeling sick after.
The following is a list of strains for the Northern Hemisphere influenza season recommended by the World Health Organization.Starting in the 2012–2013 season, the recommendation shifted to include the composition of a quadrivalent influenza vaccine (QIV) that contains both influenza B lineages, alongside a trivalent influenza vaccine (TIV) containing one influenza B lineage.
Inactivated flu vaccines cannot cause influenza and are regarded as safe during pregnancy. [95] While side effects of the flu vaccine may occur, they are usually minor, including soreness, redness, swelling around the point of injection, headache, fever, nausea, or fatigue. [149]
Doctors explain flu shot side effects, from arm soreness to fatigue. Plus, how to feel better if you feel sick post vaccine and severe reactions to be aware of. 11 Totally Normal Side Effects of ...
Look out for the common side effects of metformin, which include: Indigestion. Nausea. Vomiting. ... If you’re at high risk of type 2 diabetes, metformin may reduce your risk by 31% over three ...
If needed, the H5 vaccine could be used while a pandemic-specific vaccine is developed and produced. [16] In July 2024, CSL Seqirus, Sanofi and GSK have collectively secured $72 million in funding from the U.S. health department to boost the country’s supply of bird flu vaccines. [17]
During a normal season, the flu affects five to 20 percent of the population. That’s tens of millions of individuals in the United States alone. And the severity of the virus varies—some ...