A third primary dose is NOT the same as a booster.
A third primary dose of the coronavirus (COVID-19) vaccine is being offered to people with a severely weakened immune system. This third primary dose is an extra ‘top-up’ dose to help increase the level of protection for people who may not have generated a full immune response to the first two doses and might be less protected than the wider population.
A third primary dose is different from a booster dose. A booster dose is an additional dose to extend the duration of protection from previous doses. NHS Inform.
There are certain conditions imposed on giving third doses
* According to the JVC, the third primary should be administered eight weeks after the second dose. Unfortunately this didn't happen for most of us. It took six months for me to get mine and only after organising it myself..
*The third dose must not be AZ, which has found to give only 40% of protection in some immunocompressed patients.
* If Moderna is given, it should be a full dose as opposed to a half dose for boosters.
* The vaccination must be recorded as a third primary on a patient's record, this then automatically triggers a fourth appointment in three months time for a booster.
I'm due one in February. I'm not holding my breath.
I hope this carifies that there is a difference, not in the vaccine itself, but in the management of it.