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In theory, at this point in the vaccine game, any new variant should have a harder time getting a foothold in here (if not already here for a while), because the major ports of entry have pretty high vaccination rates.Probably not but this is the one that is most concerning so far. It just shows how we are playing a game of chance.
Delta appears more like a Darwin strain if it gets going in the USA but it sure gets close to being the one. Another 25% reduced efficacy against severe disease on Delta and it would be catastrophic. So far all the studies I've seen have been towards total protection vs no protection. I'd really like to see severe disease rates for breakthrough infections to know for sure. If 50% of the breakthroughs are almost all mild disease then it's not that big of a deal. It'll just mean a huge increase in covid deaths for those not vaccinated in the fall. As long as children have the option to get vaccinated by then, I have no problem with that. If breakthrough infections are leading to a high rate of severe disease then it could be a problem child.
Georgia isn't giving out enough data for the NYT to track it on the county level, but overall, Fulton County has a 1 dose vaccination rate of about 40.6% of the total population, which is a bit behind most major interntional airport counties. (most are around 40-55% fully vaccinated, not just 1 shot), and inline with Dallas County.
So, the hubs in Atlanta, Dallas, Las Vegas may be a little more concerning, but the NYC airports (JKF in particular), Chicago-O'Hare, LAX, Sea-Tac, should all be well equipped to not allow any variants to get a strong foothold.