Remember the guns they used to give vaccinations in the military years ago ?

That silver gun like thingy hurt like a MFer. It's actually called a jet injector. But I remember getting six of them. 

Never used in the RAF or the RAAF

Yes,  the chance of cross contamination were high and they only work if you have a vaccine that is not so sensitive to heat. 

The use of jet injectors was discontinued about 5 years ago

what do you mean years ago? they still use them today

Can remember them like it was yesterday, standing in line, in 100 degree heat.  They had quite a sting to them. 

Yep, if we were on home cycle or shore duty, they would line up the entire squadron on the Weds before Thanksgiving during a Safety Stand-Around, give us our annual flu shot and then send us home to be sick until Monday (of course if you were in 4 section duty, you would have to muster on at least one of those 4 days off to make that much special lib legal)

The problem with that was, it only took one "contagious" person in that line to infect ALL of us and then we dragged it home to our families who may NOT have had the shot yet because they needed an appointment about a month or two in advance at Medical to get one. (Socialized Medicine at it's finest)

Fun Times....

I remember being in line to get paid and you had to go by a medic station.  They had those guns and warned that if you even flinched , it'd be a mess.   But, it was efficient. 

Do they still use those?