At best, 50% effectiveness. Recent ones have been 10-20%, depending on the studies. Canada had one group at like 10% in I believe 2018. The amount of money wasted on a useless vaccine in deployment, advertising and pure unadultered propaganda about how great the vaccine is and no one knows its complete bullshit. Elderly actually do worse after getting flu vaccine in all studies.
Flu shot is a joke that costs tax payers hundreds of millions every year. It does nothing.
https://www.cdc.gov/flu/vaccines-work/effectiveness-studies.htm
At best, 50% effectiveness. Recent ones have been 10-20%, depending on the studies. Canada had one group at like 10% in I believe 2018. The amount of money wasted on a useless vaccine in deployment, advertising and pure unadultered propaganda about how great the vaccine is and no one knows its complete bullshit. Elderly actually do worse after getting flu vaccine in all studies.