As with all new inventions/procedures, this is just the first step. The process will become faster and more efficient in the future.

In my opinion, this is a great first step towards a Star Trek-like hypospray.

No one is suggesting this be put in practice in its current form, that would be insane. That said, this is a good first step for alternative forms of vaccination. “First step” being the important part.

Might be useful for those people whose blood doesn't clot. Though I don't know if a small syringe needle is even an issue for them anyway

A machine that produces ultrasonic waves is not that complex. It’s the sensors and qualified technician to read and capture the scans that’s expensive.

Plus have you ever had to physically restrain your child through a needle shot? You said “easiest” and that shit ain’t easy.

• 1.5min really isn't that long compared to the procedures just to process insurance, identity, etc. Retrieving needles, etc. This only needs the topical vaccine, an ultrasound machine, and a wipe for the machine.
• When this goes mainstream it'll be a little device with cutout so you can apply it flawlessly to the upper arm. Ultrasounds need training to get readable data, but probably a LOT less just to apply ultrasound to an area.
• Needles will still be king anywhere in the developing world. It'll be more expensive initially, but with the mass production the price will go down. And there will be small cost savings to not having to deal with sharps and biohazards as often.

I heard an ad for people scared of dentists - they were offering to put people under.

[More] dangerous and expensive, but better than skipping it altogether.

Gotta be a market for hyper-hypodermic-phobic folks. Even if you & I stick with the five second jab.

I'd like to be an optimist when it comes to things like this, some people really really can't stand needles and something like this would be great for them people. I hope it develops further.

I think it depends. I went to an ER once that threw me into a wheelchair when the world was spinning post-blood-draw and dropped me off in the hall saying "You'll be fine!". That hospital will never get an Ultrasound injector.

When I got my first COVID vax, however, I took up 20 minutes of the time of 2 on-call doctors and a nurse because my passing out often resembles a seizure. And then I took up one of their very few "just in case" beds for close to 90 minutes. Someone else with a problem with needles waiting for a vax had to wait for the bed to open up. They'd have killed to have said ultrasound injector for people like me.

Why can’t we get intranasal vaccines?