The MATH of Epidemics | Variants of the SIR Model

In this second video we look at a bunch of variants of the SIR model. We investigate other stages such as in SEIR model where there is an "Exposed" stage. We investigate vital dynamics, using Vaccines, and the so called SIS model where there is no recovered stage. The initial exponential growth of epidemics can be well modeled by these types of systems of differential equations, but ultimately they are just starting points for the incredibly complex mathematical modeling needed in a pandemic.

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YOUR TURN! Learning math requires more than just watching videos, so make sure you reflect, ask questions, and do lots of practice problems!
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This video was created by Dr. Trefor Bazett. I'm an Assistant Teaching Professor at the University of Victoria.

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[BichoPragmatico]

OH, I'm definitely recommending people to come watch this and the other SIR video for further information about predicting models! Thanks for your time sharing this.

[UnggulWidy]

I am not a mathematics or statistics student, but I can really understand the model thanks to your explanation.
Really recommended. Thank you.

[pierrecarrette]

Thanks a lot Trevor. As an engineer I very much like the adaptations (and so clear explanations thereof) of your toy model to the various practical situations. Kudos!

[andreasangelou]

I just came to this channel.. Your videos on SIR model are very good!! Nice work!!

[rupe-huzz]

Outstanding presentations Dr. Bazett. Just about the best I have come across on YouTube. Big Thanks!

[ruedigersens]

Your T-shirt also demonstrates great mathematical insight! Greetings from a german quantum chemist..love your presentation

[kameraderz]

Please cover about SIRU (Unreported) after this one. You're a really great explainer

[HugoFE]

Excelente explicación Trefor Bazett 👍👍👍 saludos desde Bolivia!!! 🇧🇴

[aashsyed]

Super exellent + the best explanation!!!

[DrBiohack]

This is really helpful, I've recently discovered your channel and I like the way you present information.

[karannchew]

After watching this video...







I ordered the same shirt in Amazon.

[SHAHHUSSAIN]

Grt work sir ...your work is exceptional 😊😊

[ASHISHVERMA-xhdd]

beautifully explained... and easy to grasp

[johannesnakayama]

Outstanding explanations! Incredibly helpful, thank you!

[arpitasantra]

please upload more and more videos on these topic with more mathematical expressions and explanation.i really liked ur video.Thank you

[gothicknight]

I wish people would take the time to watch these videos and understand the complexity and complications of epidemiology. So tired of people asserting their opinions on covid-19 virtually knowing nothing about the subject.

[RobbyThinman]

Hi. That's fabulous - been hoping for something as informative as this. One question - in a simple SIR model can we make the virus go away totally (i.e. reduce "a" (social distancing etc), and therefore R0) - or can we only hope to flatten the I curve but still have to endure everyone becoming infected at some stage? Many Thanks

[GastroenterologyPINNs]

It’s a really clear explanation Thank a lot!

[swatimahapatra]

Sir in the community section you had asked regarding suggestions for starting a new series. I know I am too late for it since I recently got to know regarding your channel but I would like to request can you kindly make a series for mathematical modeling? It would be wonderful learning this topic from you since your explanations are so easy and comfortable to understand from.

[sekander]

Well explained, Excellent ! thanks for sharing.