It is hardly complicated. Any one who can give injections nurse, MD or medical assistant ( if the state allows the last) could do that easily after reading the instructions once of those directions. Office administration would be driven by issues like insurance reimbursement and ability to keep an appropriate amount on hand for need and safely store it.
Anyone
could. But that doesn't mean that anyone should, or is even legally permitted to. I asked a physician friend if anyone other than a pharmacist or physician is allowed to reconstitute the Shingrix vaccine. His answer: "That's a good question." He didn't know.
In addition to precise instructions for reconstituting the vaccine, unlike some other vaccines, the injection needs to go into the deltoid muscle tissue, not subcutaneously. Speaking as someone who had a severe allergic reaction to my 1st Shingrix vaccine, I'm glad that at least I have some confidence that my one Shingrix dose was correctly reconstituted and administered. I wouldn't want either step done by a medical assistant or pharmacy tech.
- - - - - - - - - - -
BTW, when I posted here last year about my severe reaction to my lone Shingrix shot (hearing degradation leading to deafness in one ear; recovered except for the tinnitus, thanks to very prompt treatment) and my statement that I would not be getting the 2nd dose, a few folks here opined that I should get it anyway. Fortunately, I don't take medical advice from random people on the internet. My primary care doctor agreed that I should not get the 2nd shot, and she was aware that a single dose provides substantial protection against contracting shingles. She put in my electronic medical records that I am
"allergic to Shingrix". Even GSK states that a 2nd Shingrix shot is contraindicated for me. (It is probably the adjuvant, not the antigen, which caused my severe reaction. The adjuvant in Shingrix had never been used in a human vaccine before. I just hope that if an effective vaccine is developed for the coronavirus, it doesn't use the same new adjuvant as Shingrix.)
There is also more information available now about the efficacy of a single dosage of Shingrix. GSK's own data states:
"VE [95% confidence interval(CI)] of 1 dose of Shingrix in adults ≥50 years of age and ≥70years of age (data from the pooled analysis from both studies) was 90.8%(62.1-99.00%) and 69.5% (24.9-89.1%) respectively."
https://www.publichealthmdc.com/documents/Efficacy%20After%20One%20Dose%20i.pdf