Side effects of the flu shot include: Pain, swelling, or redness at the injection site. Low-grade fever. Minor body aches.
Studies published in the Journal of Infectious Diseases conducted during the 2017-2018 and 2018-2019 flu seasons among Medicare beneficiaries aged 65 years and older found that Fluzone High-Dose and FLUAD provided greater protection against flu -related hospitalizations than standard-dose, egg based vaccines in both
Most people have no problems from the vaccine . If you get the flu shot , you might have a mild fever and feel tired or achy afterward. Some people also have soreness, redness, or swelling where they got their shot . These problems aren’t serious and don’t last long.
The flu shot offers protection against the flu for about 6 months . A person should get a flu shot every year, and the best time to get one is the end of October.
Interaction between a vaccine and a drug has been reported only with influenza vaccine and four drugs (aminopyrine, phenytoin sodium , theophylline , and warfarin sodium), and with BCG vaccine and theophylline .
The most common side effects from flu shots are soreness, redness, tenderness or swelling where the shot was given. Low-grade fever, headache and muscle aches also may occur. If these reactions occur, they usually begin soon after vaccination and last 1-2 days.
However, as long as flu viruses are circulating, vaccination should continue throughout flu season, even into January or later. Flu vaccination is especially important for people 65 years and older because they are at high risk of developing serious complications from flu .
With flu and Covid-19 going around this year, the CDC recommends that everyone should get vaccinated in September or before the end of October – especially adults over age 65. After getting the shot, it takes about 2 weeks for the protective flu antibodies to develop in the body.
Senior flu shot side effects Soreness, tenderness, redness, or swelling where the shot was given. Headache or muscle aches. Fever. Nausea.
In response to a regular flu shot , older people produce 50% to 75% fewer antibodies, which protect against the vaccine antigens, than do younger adults. Studies have found higher antibody levels in older adults who received high-dose flu vaccines than in those who received standard flu vaccines .
Getting a flu shot does not weaken your immune system and make you more likely to get the flu . Getting a flu vaccine prepares your immune system for the flu . A flu vaccine teaches your immune system to recognize that virus as a threat.
I have learned that my symptoms after the flu shot are what immunologists would call a “robust immune response”. I feel tired and sore because my immune system is responding aggressively to the killed virus.
21 CDC Morbidity and Mortality Weekly Report, the current influenza vaccine has been 45% effective overall against 2019- 2020 seasonal influenza A and B viruses. Specifically, the flu vaccine has been 50% effective against influenza B/Victoria viruses and 37% effective against influenza A(H1N1)pdm09.
CDC recommends that people get a flu vaccine by the end of October . However, getting vaccinated early (for example, in July or August ) is likely to be associated with reduced protection against flu infection later in the flu season, particularly among older adults.
In addition to a sore arm, other common side effects of the flu shot may include: swelling , redness , or discoloration at the injection site. low grade fever . headache. muscle aches and pains. fatigue. nausea.