[quote XmasSadface]@DismantledKing
How do passes (not vaccines, passes) control the spread?[/quote]
Passes don’t control spread. They document something, and also enable a piece of information to be confirmed without releasing the underlying personal information:
e.g. my current UK Covid pass knows that I have had:
2 x astra Zeneca as my primary course of vaccination & the date
1 x Moderna as a booster & the date
2 x negative PCRs
Many x negative LFTs
By checking those it can decide if they give me a valid pass and give me something that I can show others that ‘qualifies’ me for an activity but doesn’t tell them if it’s because I’m vaccinated, because I’ve had recent negative tests or a combination
It could have infections added, and therefore count a recovered infection as allowing for antibodies
None of the above guarantee they level of antibodies someone has (though there are tests for that)
And someone could put in fake LFT negatives
What it does do is allow the risk of an event to be considered
I could be clear today, but have a fresh infection fighting against my immune system that isn’t yet detectable and subsequently pass it on to someone else
Someone could falsify their pass with fake results and not care if they knowingly or unknowingly pass on an infection
A pass system doesn’t do everything but it does more than nothing