Vaccines and Herd Immunity

In this video Paul Andersen explains how immune individuals in a population give the entire group a herd immunity. Concepts of immunity, vaccines, basic reproduction number, and herd immunity threshold are discussed.

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Music Attribution
Title: String Theory
Artist: Herman Jolly

All of the images are licensed under creative commons and public domain licensing:

[PV-freeworld]

So if most of the herd is vaccinated for their protection against a disease, why do they need to worry about the unvaccinated? How can they be at risk of infection if the vaccine is effective?

[bminus]

Thanks for this. Im in an immunology class now and this is helpful. The quality of yours videos keep going up and up

[VoidDilation]

Love the video, saved it to Favorites

[Diamonddavej]

The average R0 for SARS-CoV-2 is 3.28.

Liu, Y., Gayle, A.A., Wilder-Smith, A. and Rocklöv, J., 2020. The reproductive number of COVID-19 is higher compared to SARS Coronavirus. Journal of travel medicine.

[Chris-]

These videos are always very well done and provide lots of information.

[justgonnastay]

Yet another great video, Mr Andersen, but why, oh why, do I read the comments?  I feel like I need to dip my brain in some sort of cleaning solution to wash off the stuff that I encountered there.

[elitetech]

Good video bro you just help me with my English test❤

[andrewyates]

Don't go any farther if you're reading the comment section. You'll find the epitome of human ignorance (or maybe it's arrogance?)

Thanks for the video, btw!

[JChase-qksc]

Herd immunity seems to assume limited interaction between members of a population- e.g. at 2:24 it is said that those with immunity form a barrier between those that are infected and those are are susceptible. In a large herd where an animal moving together with others would have limited interaction with the entire population, it is understandable, but with a human being who would frequently move through the population, it is not. Or am I looking at it too simply? 

[Teusalem]

What an amazing and well explained video! Thanks for that

[NobodyXChallengerYT]

Very relevant in the current situation with the anti-vaxxers. Thanks for the upload Mr. Anderson!

[doom-mantia]

Thank you. That was very well explained.

[jenniferspringate]

Brilliant video. Thanks for spreading the message.

[omarazzam]

Is that strategy helpful in dealing with the Corona virus??? I hope that you find my comment 🙏🙏

[pokerman]

This also counts on long term immunity.

[jaykaye]

"we can't vaccinate everyone because it's voluntary"
That really didn't age well

[sasori]

Why don't they teach us in collage like that ?!
You , Mister Khan and people like you are awesome.
You give me hope in Teaching and increase my knowladge in general.
Thank you sir .

[brianbaird]

Great explanation. Try to vaccinate people, but don't waste time wringing your hands about people who are dead - set against it. Spend your time helping those who want vaccines instead.

Consider that plenty of the world wants vaccines but can't get them. That's territory which makes much more sense to help than those can get them, but won't.

Of course, if someone's on the fence, help them to get to the right side . . . that's not a waste of time at all. Thanks again, Paul!

[MorningStar]

Thank you so much! I'm adding this video to my favorites <3 Every anti-vacccer should be required to watch this video. You're so awesome!

[NatalieMarie]

another great video! you're the best... but these comments are making me want to cry -__- all these misinformed people make me so sad. we need more teachers like you, Mr.Anderson!