The Immune System: How the body fights back infections
The Immune System (by the Amoeba Sisters)
Immune System Part 1 (by CrashCourse -YT) (Note: there are 3 videos in total on the Immune system by Crash Course)
Medical Products: Vaccines & Antiobiotics & Testing
How Do Vaccines Work? (by Kelwalin Dhanasarnsombut / TED-Ed
Antibiotics, Antivirals, and Vaccines (by the Amoeba Sisters)
How we conquered the deadlyl smallpox virus (by Simona Dompi / Ted-Ed)
How do you know if you have a virus? (by Cella Wright / Ted-
Ed)