Articles
Yes the approved vaccines are safe. If you balance the risks, then taking the vaccine is much safer than taking your chances with COVID-19.
Because the vaccine may not stop transmission of the virus.
The efficacy of vaccines is estimated from trials, using statistical techniques.
Like any medical drug, vaccines are tested in large-scale randomised controlled trials.
Modelling shows that old and vulnerable people should be prioritised.
We can't say for sure, but everything depends on how many people agree to be vaccinated.