In the UK our government, and our dear leader Boris have completely screwed this pandemic up, which is why we are in such a hole and soon 100,000 of us will be dead. However, they did invest in a range of vaccines and so we were the first to start vaccinating safely (Russian and Chinese versions anyone?) And now we are the first to have three vaccines in distribution including the easiest and cheapest.
Fortunately the government has let the scientists and clinicians get on with their stuff and have put the responsibility for distribution in the hands of the Army, the best logistics outfit going. As a result it looks like all over 50s will have the first jab by the end of March and we are most likely to be the first to herd immunity.
In short, when politicians stop trying to run the show and let the experts get on with it then things tend to go right.
Right now we have two vaccines, Pfizer and Moderna, but J&J should be approved very soon.
The biggest problem we face is production. With over 300-million people in the US, we need to expand production, which is not easy with the kind of precise manufacturing and highly qualified workforce needed for these vaccines.