testing sites. those should be up and running by the end of the week. there are a number of people critical of the mayor and the administers and the way they have handled some of this recently, saying there should be more testing sites, more at-home testing kits for those who need them, more staff available and the labs need to be quicker in terms of how they're processing some of those results. in terms of times square where we are right now, it is still a go for the ball drop but having said that, the organizers are saying with anyone coming out is going to have to show proof of vaccination. they are also not requiring masks, but they are recommending it. victor. >> jason carroll there in times square, thank you, jason. moderna reported some encouraging preliminary data today. it says that its covid booster is effective against the omicron variant. cnn senior medical correspondent elizabeth cohen is here. elizabeth, that's a great banner headline, but i'm sure there's a lot more behind that that we