What are Viruses and Vaccines?

[@zippyh7172]

This is a really good video, i have no idea how you don't have more subscribers! Keep up the good work :)

[@CaryGraham]

Thank you! Will do.

[@raydenwatts9905]

I love your videos. I am an 39 year old returning student to college and I came upon your videos. They keep me engaged and are very informative!

[@naghmanaroy]

Keep the good work up

[@Khaled.almohamed]

Nice animation

[@CaryGraham]

Thanks, Khalid!