What is the 2021 flu vaccine called?
What vaccines are available for the 2021-2022 flu seasons?
|Vaccine name||Age range|
|Flucelvax Quadrivalent (FDA package insert)||6 months or older|
|FluLaval Quadrivalent (FDA package insert)||6 months or older|
|FluMist Quadrivalent (FDA package insert)||2-49 years|
|Fluzone High-Dose Quadrivalent (FDA package insert)||65 years or older|
Is there a vaccine for influenza B?
All flu vaccines in the United States are “quadrivalent” vaccines, which means they protect against four different flu viruses: an influenza A(H1N1) virus, an influenza A(H3N2) virus, and two influenza B viruses.
Does the flu shot cover H3N2?
Flu vaccines protect against four strains: H3N2, H1N1 and two strains of influenza B. The study covers just H3N2, but that happens to be the main circulating strain.
What are the 4 types of influenza?
There are four types of influenza viruses: A, B, C and D. Human influenza A and B viruses cause seasonal epidemics of disease (known as flu season) almost every winter in the United States.
What does H1N1 stand for?
The influenza type A virus, known as H1N1 is a respiratory infection that was popularly named “swine flu.” The virus was first recognized in April 2009 and spread quickly to 74 countries worldwide. The World Health Organization (WHO) declared the virus a global pandemic.
What is different about the over 65 flu shot?
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-dose flu vaccines.
What strains are in the 2020 2021 flu vaccine?
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 (B/Victoria lineage)-like virus (updated)
- B/Phuket/3073/2013-like (Yamagata lineage) virus.
What does quadrivalent mean?
Definition of quadrivalent (Entry 1 of 2) 1 : tetravalent. 2 : composed of four homologous chromosomes synapsed in meiotic prophase. quadrivalent. noun.
Which viruses do quadrivalent flu vaccines contain?
A quadrivalent influenza (flu) vaccine is designed to protect against four different flu viruses, including two influenza A viruses and two influenza B viruses.
What are the disadvantages of the flu shot?
What are the risks of the flu vaccine?
- Still getting the flu. Sometimes you can get the flu shot and still come down with the flu.
- Severe allergic reaction. Some people may have a negative reaction to the flu shot.
- Guillain-Barré syndrome.
Whats the difference between influenza A and B?
Influenza A is usually the more common form of the virus and tends to circulate early in the season, while influenza B is normally less common and shows up late in the season. This season, influenza B has been more common and is circulating earlier than in previous seasons.