I'm pretty sure if you injected 10,000 vaccines into someone all at once, their body would explode. But please, do keep defending the guy's ridiculous hyperbole.
I'm interested to see the experimental evidence that you have to back up that statement. If you read my comment, you will see that I comment on taking simultaneous vaccines. For many vaccines, antigens for eliciting an antibody response to several diseases are combined into one formulation.
10,000 is probably 2-3 orders of magnitude greater than the number of different vaccines available on any market, so attacking or defending that number has no utility. And commenting as if that were my point detracts from the conversation.
It's much more interesting to think about how his work likely saves hundreds of lives each day, and to contemplate what we can do in our own lives to have such a great impact at such a large scale.
The useful part of the vaccine is on the order of micrograms. 10,000 * a single vaccine would be on the order of milligrams. The goal of a vaccine is to introduce molecular geometries that cause your body to react and form antibodies - you don't need a lot of liquid volume to accomplish that objective.
I honestly don't know enough to know if 10,000 vaccines is hyperbole, but on the face of it it doesn't seem particularly implausible.
I'm like 99% sure that like 99% of what's injected into you when you get a vaccine is some sort of filler like a saline solution, or a preservative like that good old mercury based one that everyone used to bitch about. So it's quite likely in my mind that you could formulate some sort of "everything vaccine" with a sufficient quantity of dead viruses or virus parts from 10,000 different viruses, and fit it into a single, normal-sized syringe.
Speaking of ridiculous hyperbole, are you sure you haven't confused vaccines with something else? Vaccine's active ingredients are made of very teeny tiny things such as deactivated viruses, and are not generally noted for their explodyness.