Why can’t inactivated flu vaccines cause flu in a vaccinated person?
The inactivated flu vaccine does not contain the live virus and cannot cause flu..
What strain does the flu shot cover 2020?
The committee recommended that the quadrivalent formulation of cell- or recombinant based influenza vaccines for the U.S. 2020-2021 influenza season contain the following: an A/Hawaii/70/2019 (H1N1) pdm09-like virus; an A/HongKong/45/2019 (H3N2)-like virus; a B/Washington/02/2019- like virus (B/Victoria lineage);
Does the flu shot cover influenza A?
Flu shots protect against three or four strains of flu virus. Trivalent flu vaccines protect against two influenza A strains — H1N1 and H3N2 — and one influenza B strain.
How effective is the flu shot for 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%.
Is the Flu A or B worse?
Frequently asked questions about Influenza A and B Influenza type A and type B are similar, but type A is overall more prevalent, sometimes more severe, and can cause flu epidemics and pandemics.