The vaccines have a demonstrated effectiveness of up to around 90%, so at least 10% are susceptible to infection after being vaccinated. However, their outcomes are likely to be better than if they had not had the vaccine, and as the proportion of people who are vaccinated increases, the likelihood of any individual becoming infected shall decrease.
Where did you get that 90% from? The numbers I have seen are just over 60% no matter which vaccine it is. And really, the vaccines have not been used long enough to even have an accurate estimation of effectiveness.The vaccines have a demonstrated effectiveness of up to around 90%, so at least 10% are susceptible to infection after being vaccinated. However, their outcomes are likely to be better than if they had not had the vaccine, and as the proportion of people who are vaccinated increases, the likelihood of any individual becoming infected shall decrease.