To make the vaccine, therefore, you'll need to separate the cowpox viruses from the rest of the fluid. Fill the syringe with the purified cowpox viruses. The smallpox vaccine is a live vaccine ...

This, as many of you probably already know, is the smallpox vaccine. Let's take a deep dive into the world of smallpox vaccine scars – those little marks on our skin that hold big stories within ...

Fill the syringe with a strain of the virus that ... You have just produced a live-attenuated measles vaccine. Like the smallpox vaccine, the virus within the vaccine will invade body cells ...