Delta is as contagious as chicken pox. Eventually almost everyone is going to get it. Even at high rates of vaccination the vaccinated will still transmit, at lower efficiency of course, and the unvaccinated will bear the consequences. This will get very nasty for the 20% most affected. Expect a massive overload on ICU's once we open up. Anti vaxers gasping for breath pleading for a jab and being told it's too late. IMO they should not be treated ahead of non covid cases requiring ICU.
