Yesterday, in a statement to Parliament on the UK's planned "vaccine passport", Health Secretary Sajid Javid admitted the NHS Pass would require three shots for you to be considered "fully vaccinated".

"Once all adults have had a reasonable chance to get their booster jab, we intend to change this exemption to require a booster dose,"

While many of us predicted this would be the case, it is the first time any British politician has actually said it out loud, and in front of parliament too.

This incredibly cynical "evolving definition" of "fully vaccinated" is not a new phenomenon, and is not isolated to the UK either.

Israel changed their definition of "fully vaccinated" to include the booster months ago. New Zealand's ministry of health is "considering" doing the same, as is Australia.

The EU isn't far behind either, with proposals in place to make travel dependent on having a third dose.

The US hasn't formally adopted a new definition yet, but you'd have to be blind not to see the signs. Just yesterday the LA Times headlined:

Should the definition of 'fully vaccinated' be changed to include a booster shot?