Hi All,<p>I'm talking with someone who is a bit 'uncertain' about getting their COVID vaccination. They are (fortunetely!) open to learning and want to understand how herd immunity works. What are the best simulators out there that show a nice graphical display of herd immunity in action?<p>Thanks
I like this article, it has interactive simulations. It is a bit long however: <a href="https://meltingasphalt.com/interactive/going-critical/" rel="nofollow">https://meltingasphalt.com/interactive/going-critical/</a>
This YouTube video by It's Okay To Be Smart does well to explain how herd immunity works by demonstrating with ping pong balls and mouse traps. <a href="https://www.youtube.com/watch?v=Et_J8_x4qBs" rel="nofollow">https://www.youtube.com/watch?v=Et_J8_x4qBs</a>
It's not interactive but the wikipedia article on herd immunity demonstrates it perfectly though I would try to steer your friend in a different direction as herd immunity can be used as an excuse not to get vaccinated (see Free Rider Problem), instead try to get to the root of their uncertainty and try to get them into a mindset where they consider others rather than just their own welfare.