• 4 years ago
Why does the flu hurt so much? Why can't we cure the cold? How long have humans had to endure these viruses? And, which one do you have?

Subscribe to our YT: https://bit.ly/2GjvyNs

Join 25M followers on Facebook: https://bit.ly/32ogJCu
Follow IFLScience on Twitter: https://bit.ly/1NZUWFM
Follow IFLScience on Instagram: https://www.instagram.com/iflscience/

Read More from us: http://www.iflscience.com