Some potentially good news on the COVID-19 treatment front: Thanks to a technique that’s more than a century old, recovered COVID-19 patients may be in a position to help the rest of us -- with their blood plasma.

It describes various means by which an individual acquires active and passive immunity.

You’re infected. Something harmful is in your body and you gotta get rid of it. In this video, I’m gonna talk about four ways your immune system attacks everything.

This video explains the two main types of immunity - active and passive. Also, the video highlights the importance of vaccines in developing immunity and how they have greatly improved human life. Investigating the Immune System part 6/9