It's more than possible, it's actually likely given Israel's soaring number of breakthrough cases in an almost entirely vaccinated population. https://www.scie

It's more than possible, it's actually likely given Israel's soaring number of breakthrough cases in an almost entirely vaccinated population. https://www.sciencemag.org/news/2021/08/grim-warning-israel-vaccination-blunts-does-not-defeat-delta https://www.sciencemag.org/news/2021/08/grim-warning-israel-... The vaccines have applied selective pressure to create super strains. It won't be long before we have a covid strain akin to airborne AIDS. I'd say it's prudent to have a good N100/P100 respirator for if and when that time comes. The polio vaccine is nearly 100% effective. That's the difference here - the covid vaccines have efficacies as good as Biden's withdrawal from Afghanistan ;-)