What viruses will the 2020-2021 flu vaccines protect against?

Sandy Salfelder asked, updated on December 1st, 2021; Topic: flu vaccine
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/amaanswers.com/do-they-give-you-a-tetanus-shot-when-pregnant"> https://amaanswers.com/are-publix-flu-shots-free"> ##There are many different flu viruses and they are constantly changing. The composition of U.S. flu vaccines is reviewed annually and updated as needed to match circulating flu viruses. Flu vaccines protect against the three or four viruses (depending on the vaccine) that research suggests will be most common.

For 2020-2021, trivalent (three-component) egg-based vaccines are recommended to contain:

  • A/Guangdong-Maonan/SWL1536/2019 (H1N1)pdm09-like virus (updated)
  • A/Hong Kong/2671/2019 (H3N2)-like virus (updated)
  • B/Washington/02/2019 (B/Victoria lineage)-like virus (updated)

Quadrivalent (four-component) egg-based vaccines, which protect against a second lineage of B viruses, are recommended to contain:

  • the three recommended viruses above, plus B/Phuket/3073/2013-like (Yamagata lineage) virus.

For 2020-2021, cell- or recombinant-based vaccines are recommended to contain:

  • A/Hawaii/70/2019 (H1N1)pdm09-like virus (updated)
  • A/Hong Kong/45/2019 (H3N2)-like virus (updated)
  • B/Washington/02/2019...  

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More than that, what month do flu shots become available?

People should begin getting vaccinated soon after the 2020 flu vaccine becomes available on April 1st, to ensure that as many people as possible are protected before flu season begins. However, as long as flu viruses are circulating in the community, it's not too late to get vaccinated.

In a general, how effective is this years flu shot 2020? CDC's influenza vaccination coverage reports show that overall flu vaccination coverage (among people 6 months and older) during 2019-2020 increased from the previous season to nearly 52%.

Next, how long does the flu shot last 2020?

The effects of the vaccine generally only last through one flu season, which is about six months long. That's part of the reason you need one every year. Starting two weeks after you get a flu shot, you should be protected from certain influenza viruses for the remainder of that flu season.

Is the 2020 flu shot available?

There are two new vaccines licensed for use during the 2020-2021 flu season. The first is a quadrivalent high-dose vaccine licensed for use in adults 65 years and older. This vaccine will replace the previously licensed trivalent high-dose vaccine.

5 Related Questions Answered

What time of day is best to get flu shot?

What time of day should you get a flu shot? The body may have a stronger immune response when the vaccine is given in the morning, according to a study published in the journal, Vaccine. β€œThat might translate to better immunity against the flu,” Dr. Favini says.

What is the success rate of the flu vaccine?

A 2012 meta-analysis found that flu vaccination was effective 67 percent of the time; the populations that benefited the most were HIV-positive adults aged 18 to 55 (76 percent), healthy adults aged 18 to 46 (approximately 70 percent), and healthy children aged six months to 24 months (66 percent).

How long does it take for flu shot to work?

Does flu vaccine work right away? No. It takes about two weeks after vaccination for antibodies to develop in the body and provide protection against influenza virus infection. That's why it's best to get vaccinated before influenza viruses start to spread in your community.

Does the flu shot lower your immune system?

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.

What strains are in the 2020 flu vaccine?

2020 seasonal influenza vaccines
  • an A/Brisbane/02/2018 (H1N1)pdm09-like virus;
  • an A/South Australia/34/2019 (H3N2)-like virus;
  • a B/Washington/02/2019-like (B/Victoria lineage) virus; and.
  • a B/Phuket/3073/2013-like (B/Yamagata lineage) virus.
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