How the f**k is America getting vaccinations so right? Does the fact that most of the big producers are American help here?
I think that's probably part of it. The other part is because we just threw a lot of money at it last year. We invested billions into virtually all of the major players in vaccine production and bought up enough vaccine to cover the US population a few times over. My understanding is that the we also cut a lot of red tape and bureaucracy, including freedom from liability. It may have been the one thing the Trump Administration did right. I'm quite certain though that they would have massively faltered in rolling it out, as they didn't prepare for that. That's something the Biden Administration has excelled at. Vaccines are being distributed from the federal government. It's working with the states, local governments, and private business partnerships (primarily pharmacies) to distribute and administer vaccines. Even I'm amazed at how well this rollout is working so far.
The UK system is different from the US, but I think they basically followed the same path in investing in and procuring vaccines early on. Their strategy is a bit different, but one that has so far appeared to be quite successful.