> CDC reckoned they reduce the risk by about 40-60%.
curious, Do you have a link to this by any chance?
According to this
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3693492/
After looking at "328 households with 1441 members, including 839 children," for an entire year (2011) these authors determined that there was a difference of 4/10ths of one percentage point between those who received flu vaccine and those who didn't.
The infection risk was 8.5% in the vaccinated and 8.9% in the unvaccinated.
According to this CDC study
https://academic.oup.com/cid/article/64/5/544/2758477
"We observed decreasing vaccine effectiveness with increasing time. Maximum vaccine effectiveness was observed shortly after vaccination, followed by a decline..... Vaccine effectiveness remained greater than zero for at least six months for influenza A(H1N1) and influenza B and at least five months for influenza A(H3N2) viruses."
They say "greater than zero" , far cry from 40- 60% :D
Cannot post more replies atm, but for people saying 5% is still something.
> Going from 8.9% to 8.5% is a 5% reduction in flu cases. If this translates to 5% fewer sick days during the flu-period and a 5% reduction in doctor visits that are due to flu symptoms (some people go to the doctor for everything), that can absolutely be a reason for the government to want people to get their flu shots.
This line of reasoning assumes that there are only positive effects from vaccines. There are many many side effects of flu vaccines.
Just to quote one,
http://journals.plos.org/plosone/article?id=10.1371/journal....
"Hospitalizations were slightly more common among subjects who were vaccinated than among the others"
"hospitalizations for pneumonia and influenza, that were 47% more likely among subjects who received the tetravalent vaccine as compared with those who were not vaccinated."