Thank you Draz.Yes.
Here is some reading for you on effectiveness.
The UK government has been urged to speed up giving two doses of the covid-19 vaccine after data showed a single dose was only 33% effective against the B.1.617.2 variant first detected in India, which continues to see a rapid growth in cases in the UK. A preprint paper released by Public...www.bmj.com
Here is a very useful tool in the modern age:
So is 8-12 weeks the norm for the follow up vaccine your way?