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SciShow
Why Some Countries Are Delaying COVID Booster Shots
Some countries are planning to wait up to 12 weeks to administer second doses of COVID-19 vaccines. Will this slow the virus?
SciShow
Why Do Some Shots Make Your Arm Hurt So Much?
From MMR boosters to tetanus, you'll probably get a lot of shots in your life. And one thing you might notice is that some of them don't feel like much, but some of them can make your arm reallllly sore! Why is that?
Sophia Learning
Sophia: Vaccines
A narrated tutorial investigating how vaccines are used to prevent diseases. [4:59]