Is trivalent or quadrivalent flu vaccine better?
Overall, they found that even though the quadrivalent vaccine provided better protection against the B lineage during four influenza seasons from 2013-2014 to 2016-2017, it did not protect better than the trivalent vaccine against outpatient medical visits for any influenza B illness.
What are 4 flu strains?
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 strains are in the 2020 flu shot?
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)
How many types of flu vaccines are there?
Two types of influenza vaccine are widely available: inactivated influenza vaccines (IIV) and live attenuated influenza vaccines (LAIV). Traditionally, influenza vaccines (both IIV and LAIV) have been produced to protect against 3 different seasonal influenza viruses (also called trivalent vaccines).
Which is better fluzone or fluad?
Fluzone High-Dose contains four times the antigen that’s in a standard dose, effectively making it a stronger version of the regular flu shot. FLUAD pairs the regular vaccine with an adjuvant, an immune stimulant, to cause the immune system to have a higher response to the vaccine.
What is the name of the flu vaccine for 2020?
TABLE 1. Influenza vaccines — United States, 2020–21 influenza season*
| Trade name (Manufacturer) | Presentation | Route |
|---|---|---|
| Flucelvax Quadrivalent (Seqirus) | 5.0-mL MDV | IM¶ |
| High dose, egg based† (HD-IIV4) | ||
| Fluzone High-Dose Quadrivalent (Sanofi Pasteur) | 0.7-mL PFS | IM¶ |
| Standard dose, egg based† with MF59 adjuvant (aIIV4) |
What flu shot does CVS use?
Types of flu shots This year CVS Pharmacy and MinuteClinic offer standard Quadrivalent (QIV) flu vaccine as well as senior dose vaccines for adults ages 65 and older.
How many strains of flu does the vaccine cover?
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.
When does the CDC recommend getting a flu shot 2020?
Flu Vaccines During the COVID-19 Pandemic Getting vaccinated in July or August is too early, especially for older people, because of the likelihood of reduced protection against flu later in the flu season. September and October are good times to get vaccinated.