What’s the SOP for administering vaccine jab?

OF late, several video clips have been making the rounds on social media alleging that some people were injected with empty syringes or that insufficient doses of the Covid-19 vaccine were administered. Although at least one such video has since been found to be a case of misunderstanding, others are still awaiting investigation.

This has naturally alarmed the public, prompting some to take precautionary measures when they turn up for their vaccination. One of my friends, a retired dentist, asked to see the bottle and the syringe after her jab, as she wanted to