1/ Vaccination rate possible in USA: the expectations I read are far too low. Millions of people already have the skills needed to push needles into arms. Here I show you how many people could do the injecting by job category. These numbers do not include retirees.

2/ USA has 3.1 million registered nurses. This again does not include retirees (and more retired and more in training). https://www.bls.gov/ooh/healthcare/registered-nurses.htm

3/ USA also has practicing 752 thousand physicians (and more retired and more in training). https://www.bls.gov/ooh/healthcare/physicians-and-surgeons.htm

4/ USA has 89 thousand veterinarians. They jab other animals with needles every day, while trying to avoid getting bitten. Though individual states might be too inflexible to allow them in inject people in a national health crisis. https://www.bls.gov/ooh/healthcare/veterinarians.htm

5/ USA has 151 thousand working dentists too. They inject gums with numbing drugs every day. Surely they could vaccinate as well. So far we are over 4 million without needle usage training. https://www.bls.gov/ooh/healthcare/dentists.htm

6/ USA has 752 thousand medical assistants whose legal ability to use needles varies by state. https://www.bls.gov/ooh/healthcare/medical-assistants.htm#tab-1

7/ USA has 125 thousand physician assistants (paid more and more trained than medical assistants) who seem to legally be able to use needles too. https://www.bls.gov/ooh/healthcare/physician-assistants.htm#tab-1

8/ USA probably has about 65 thousand hospital/medical corpsmen in the military. See these two links. https://www.bls.gov/ooh/military/military-careers.htm

9/ What I've listed above is probably not a comprehensive list of who could vaccinate. But I think it illustrates that at the stage of the final inches of vaccine delivery we have people with the skills to inject millions or even tens of millions of people per day.

10/ If we could produce tens of millions of doses of vaccines per day and if we had sufficient will and organization we could vaccinate as fast as we could produce vaccine doses. Our biggest problem continues to be production capacity and we should increase it.

11/ Forgot to include the 265k paramedics and EMTs. Lots of people know how to use a needle. https://www.bls.gov/ooh/healthcare/emts-and-paramedics.htm

12/ Also forgot to include 132k phlebotomists! My bad. https://www.bls.gov/ooh/healthcare/phlebotomists.htm

13/ Also forgot 322k pharmacists.
https://www.bls.gov/ooh/healthcare/pharmacists.htm

14/ Also 422k pharmacy technicians.
https://www.bls.gov/ooh/healthcare/pharmacy-technicians.htm#tab-2
But whether pharmacy technicians can vaccinate varies by state. https://www.pharmacist.com/article/pharmacy-technicians-gear-immunize