### Effect of Vaccinations on R_0 – With graphs

How do vaccinations reduce R_0?

What does it take to achieve herd immunit?

### What is the effect of requiring vaccination?

How effective would requiring vaccinations to attend an event be?

Very.

### In praise of simple models II

Just because they don’t use big data doesn’t mean models can’t give big insight.

### In praise of simple models – Part I

A mathematical model is a thought experiment that helps you make a prediction.

### When will a SARS-CoV-2 mutation emerge that overcomes vaccine resistance?

Time is the wrong measure with which to measure mutation rate. Let’s talk about the right measure.

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