Studies on live vaccines have very limited data, but these preparations may be more effective than inactivated vaccines. His views on the efficacy of flu vaccines are rejected by medical institutions including the CDC and the National Institutes of Healthand by key figures in the field like Anthony Fauci.
August 17, AZP Worldwide Shutterstock The seasonal flu shot is a yearly vaccine administered to protect against the flu, or influenza. Flu shot the United States, flu shots are recommended for everyone ages 6 months and older, according to the Centers for Disease Control and Prevention.
The flu can be a very serious illness, especially in young children, adults ages 65 and over, those with underlying health conditions, and pregnant women. The flu shot is the best way to protect yourself and family from the flu, the CDC says.
Strains of the flu virus are constantly changing, so a new flu vaccine is made each year. Scientists make the vaccine before the flu season starts by predicting which flu strains are likely to be the most common during the upcoming season.
William Schaffner, a preventive medicine and infectious disease expert at Vanderbilt University School of Medicine. What kinds of flu shots are there? Flu shots protect against three or four strains of flu virus.
Quadrivalent flu vaccines — offered Flu shot the first time in the flu season — protect against the same strains as the trivalent vaccine, as well as an extra influenza B strain.
There is also a needle-free flu shot, delivered by a so-called jet injector, which uses a high-pressure stream of fluid to inject the vaccine, the CDC says.
It is approved for adults ages 18 to Flu vaccines for the to season The composition of the flu shot will be slightly different from last season's flu shot. Specifically, there will be a different strain of the H3N2 virus and a different strain of the influenza B virus in this season's flu shot, compared with last season's shot.
According to the CDCthe trivalent flu shot will contain the following Flu shot of the flu virus: The CDC said it was making a change to the influenza B component of the vaccine because of an increase in circulation of influenza B strains that have "drifted" genetically, compared with earlier strains.
The agency said it was making a change to the H3N2 component to address concerns that this strain of the virus changes somewhat when it's grown in eggs during the manufacturing process. When the new H3N2 component is grown in eggs, it appears more similar to circulating flu viruses, compared with the strain that was used in last year's vaccine.
Is the nasal spray recommended? After not recommending the flu nasal spray for the past two years, the CDC is once again recommending the spray during the flu season. For both the season and the season, the CDC omitted the nasal spray, called FluMist, from its list of recommended flu vaccine types.
That's because data showed that the nasal spray was not very effective at preventing flu from tothe CDC said. But this year, the maker of FluMist, AstraZeneca, said that it had slightly changed the formulation of the spray, and a study of U. It was partly based on this data that the CDC added the nasal spray back to its list of recommended flu shot types.
The nasal spray is licensed for healthy people ages 2 to 49, but it is not recommended for pregnant women. Still, some experts disagree with the CDC recommendation. The American Academy of Pediatrics AAP said that it will still advise families to choose the flu shot, rather than the nasal spray, during the flu season.
After reviewing the same data that the CDC used to make its decision, "the AAP recommends children receive the injectable form of the vaccine, which was shown to be more consistently effective against most strains of the flu virus over the past several flu seasons," compared with the nasal spray, the organization said in a statement.
But the AAP said that the nasal spray could be used this year as a "last resort" for children who would otherwise not receive a flu shot. Exactly when the flu season starts and ends is unpredictable, so health officials recommend that people get their flu shot in early fall, preferably by the end of October, the CDC says.
Flu activity typically peaks in January or February. Most flu vaccines are given before Thanksgiving, Schaffner said, but people can still get their shot throughout the winter months.
Each season's flu shot expires in June of that year, but Schaffner said that he would consider it "too late" to get a flu vaccine after March, unless a person is traveling to the Southern Hemisphere where the flu season will be starting.
After vaccination, it takes a person about two weeks to build up immunity against the flu. People can visit the CDC's HealthMap Vaccine Finder to find flu shot locations, although they should call the location ahead of time to see if they have the vaccine in stock. How effective is the flu vaccine?
The effectiveness of the seasonal flu vaccine depends upon several factors, including how well the flu strains in the vaccine match the strains in circulation. Some studies show that when strains in the vaccine are a good match with the ones that are circulating, vaccinated individuals are 60 percent less likely to catch the flu than people who aren't vaccinated, according to the CDC.
Flu vaccine effectiveness can also vary depending on the person being vaccinated — the vaccine tends to work best in healthy adults and older children, and less well in older adults.
For instance, a study from the CDC found that the year's flu vaccine was not very effective in adults ages 65 and over:Get the facts about influenza vaccine (flu shot) side effects, ingredients, and vaccination effectiveness. Learn who should (children, pregnant women, elderly) and shouldn't get a flu shot.
Discover important flu information including prevention, pediatric vaccine, flu relief ideas, and how to get high dose flu and pneumonia shots for Medicare Part B at no cost.
The goal of the flu vaccine isn't just to keep the flu away -- it's to reduce the number of severe flu illnesses that will land you in the hospital. Claim: This year's flu vaccine is “less effective.\"False. Flu vaccines really do prevent the flu in infants, children, and adults.
WebMD explains the reasons to get a flu shot each year, what kind to get, and who shouldn’t get one. This year's annual flu shot will offer protection against three or four of the influenza viruses expected to be in circulation this flu season. A high-dose flu vaccine also will be available for adults age 65 and older.
Influenza is a respiratory infection that can cause serious complications.