There's a mathematical anomaly on the CDC's vaccination-tracking website today. On Saturday the number of doses to date was shown as 79,128,495. Today the figure has dropped to 75,204,965. I've checked a few websites without finding an explanation. No doubt there are other possibilities, but these are the two I thought of:
- Saturday's figure included a lot of the doses that got hung up due to weather delays because they expected to get them delivered on Saturday (or Friday). But many of the delayed doses are still hung up somewhere, so they recast the final delivery figure reported this week align with reality. If this is the explanation--and I think it's something like that, there will be quite an upward bounce next week.
- The CDC realized it had been double-counting some doses, perhaps reporting military doses as delivered both to the military and to the individual states where the bases are located. If this is the explanation, we have about 4 million fewer doses of vaccine available at the moment than we thought, but on the other hand, the country has been doing a more efficient job of administering vaccinations than it looked like before (using a higher than reported percentage of the available doses).
- Saturday's figure included a lot of the doses that got hung up due to weather delays because they expected to get them delivered on Saturday (or Friday). But many of the delayed doses are still hung up somewhere, so they recast the final delivery figure reported this week align with reality. If this is the explanation--and I think it's something like that, there will be quite an upward bounce next week.
- The CDC realized it had been double-counting some doses, perhaps reporting military doses as delivered both to the military and to the individual states where the bases are located. If this is the explanation, we have about 4 million fewer doses of vaccine available at the moment than we thought, but on the other hand, the country has been doing a more efficient job of administering vaccinations than it looked like before (using a higher than reported percentage of the available doses).