Right now vaccinations are all over the news. There are many companies that have developed vaccines for COVID-19,

and there's a good chance that most people in the world will wind up getting a vaccine in the next year or two.

Many of you may have never given much thought to what is a vaccine. How do they work and how are they developed?

Well, there are answers to those questions. Learn more about the history of vaccines and how they work on this episode of Everything Everywhere Daily. Book your ticket to happiness with Sun Express Airlines. So, This episode is sponsored by Scotty Vest. If you live in the Northern Hemisphere, it's

finally spring. That means you might be putting away your winter coats into storage and

wearing lighter jackets. Well, if you're looking for some great spring gear, you owe it to

yourself to check out the selection at Scotty Vest. Scotty Vest gear is some of the most functional

and useful clothing on the planet and it looks great too. Once you wear it

you'll wonder how you ever got along without it. You can get 15% off your next order by going to ScottyVest.com and using coupon code

everything everywhere, all one word at checkout.

To begin to understand vaccines, let's start right off with the dictionary definition.

A vaccine is, quote, a preparation of a weakened or killed pathogen,

such as a bacterium or virus,

or a portion of the pathogen structure

that upon administration to an individual

stimulates antibody production or cellular immunity against the

pathogen but is incapable of causing severe infection."

End quote. So basically what a vaccine does is put a dead version of a harmful virus or bacteria in your body

such that your immune system can recognize it and fight it off in the future.

However, because it's dead, it won't transmit whatever illness is associated with the microbe.

Normally, in order for your immune system to develop an immunity to something, you first have to catch it.

The problem with that is pretty obvious. If you catch some illness, then you will suffer from it which runs the risk of long-term complications and possibly death, depending on the illness.

...