You can tell people that if they had covid they're at less risk because they've built up a resistance, but you can also tell them everyone is required to get the vaccine anyway.
But we can do testing.
For the record:
> Earlier estimates that 80% of infections are asymptomatic were too high and have since been revised down to between 17% and 20% of people with infections.[1]
> It’s also unclear to what extent people with no symptoms transmit SARS-CoV-2. The only test for live virus is viral culture. PCR and lateral flow tests do not distinguish live virus. No test of infection or infectiousness is currently available for routine use.678 As things stand, a person who tests positive with any kind of test may or may not have an active infection with live virus, and may or may not be infectious.[1]
And not getting vaccinated because you don't want to support the pharma industry misses that they get $20 per shot for the vaccine, but will get thousands per dose of the expensive meds you'll need if you wind up in the ICU.
Strengthening your argument further, the pharma industry already got $20 per shot for the vaccine.
The government signed a contract for the shots, so if you're letting them go to waste, you're just wasting your tax dollars which went to pharma companies anyways.
You saw a lot of this at the beginning of covid... lots of people saying "well I had a bad cough for a little while... maybe I already had it"
You could maybe specify that people who have had covid need a positive test to skirt any vaccine mandates... but any sort added complexity at this scale is going to create a bunch of additional nonsense. People aren't even capable of understanding how to wear masks correctly.
So just get the vaccine so we can all get on with our stupid lives. I get vaccines all the time, this one is free, and in the grand scheme of things if you're right... this is fairly minor when it comes to pharma grifts.
Not getting vaccinated because you don't want to support the pharma industry is like driving your car on the sidewalk because you don't want to support the department of transportation. You're not making a point to anyone, and you're putting a bunch of strangers at risk to do it.