Let’s look at some real history. The Salk vaccine was 60–70% effective against PV1 (poliovirus type 1), over 90% effective against PV2 and PV3. It took a massive vaccination campain to eradicate Polio.
I think there was a typo in the middle of your sentence.
Here’s correction:Conspiracy theories thrive when the “lie based, right wing echo chambers” are such biased one-sided, propaganda peddling, hypocrites.
Acting like a Mario Cuomodore Computer