Herd Immunity Explained With 500 Mousetraps Shows Why Vaccines Work

This video made with mousetraps and ping-pong balls makes how herd immunity works crystal clear.
Derya Ozdemir

The COVID-19 pandemic has added numerous "new" words to our collective dictionary, with even the younglings making sense of words such as virus and pandemic. We all have a vague idea of what they are, and ever since the start of the pandemic, we've been hearing words such as "herd immunity," but you might not know exactly what it means. 

This video by the popular YouTube channel It's Okay To Be Smart explains and visualizes herd immunity by using 500 mousetraps and 500 ping-pong balls with the help of another popular YouTube channel The Slow Mo Guys. By setting them off, the video aims to show why vaccines work in a very creative way. The key takeaway is that they don't just protect you, but also protect the whole population, even those who didn't get vaccinated.