This study, (trying to track the actual study now) paints a very different picture to dominant strain based vaccine efficacy, suggesting a 3rd booster is "likely" as effective. Not sure I buy into this until we see an actual dominant strain based vaccine. But boosters regardless of being alpha do still make sense, both for wane, but just for the logical theory of Moderna providing greater efficacy and much less wane, study's showing more than double the dose, that being the theory of why (I say theory because the studies still havnt been peer reviewed yet). Also need to be a little bit skeptical without being conspiracy theorist, due to who may be funding studies, which is often privy information.
Delta variant not reason for Pfizer vaccine’s waning protection — Study (vanguardngr.com)
If studies are correct and Moderna's full immuno efficacy is ~76% vs pfizer 42%, imagine theoretically what an FDA approved 3rd booster for Moderna will do. This could be the way forward. Will be fascinating if it goes ahead to see the early data out of the US states that are using Moderna
Moderna COVID vaccine booster shot gets an early thumbs-up, but it's not a done deal. What to know - CNET


