We can't say for sure, but everything depends on how many people agree to be vaccinated.
Modelling shows that old and vulnerable people should be prioritised.
Like any medical drug, vaccines are tested in large-scale randomised controlled trials.
The efficacy of vaccines is estimated from trials, using statistical techniques.
Because the vaccine may not stop transmission of the virus.
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.
We are all longing to go into a lower tier, but this can come at a high price later on.
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