Check out the new 50-minute Crash Course on human responses to tuberculosis: https://www.youtube.com/watch?v=7D-gxaie6UI Have you ever wondered about what stops a disease from going global? Well pack your bags, because we're taking a world tour to visit seven of the most regional diseases out there, from Guinea worm to an Australian form of rabies, to learn just what it is about them that keeps them from wandering off. For some reason, this wasn't a very popular package from the travel agent. Hosted by: Savannah Geary (they/them) ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Adam Brainard, Alex Hackman, Ash, Benjamin Carleski, Bryan Cloer, charles george, Chris Mackey, Chris Peters, Christoph Schwanke, Christopher R Boucher, DrakoEsper, Eric Jensen, Friso, Garrett Galloway, Harrison Mills, J. Copen, Jaap Westera, Jason A Saslow, Jeffrey Mckishen, Jeremy Mattern, Kenny Wilson, Kevin Bealer, Kevin Knupp, Lyndsay Brown, Matt Curls, Michelle Dove, Piya Shedden, Rizwan Kassim, Sam Lutfi ---------- Looking for SciShow elsewhere on the internet? SciShow Tangents Podcast: https://scishow-tangents.simplecast.com/ TikTok: https://www.tiktok.com/@scishow Twitter: http://www.twitter.com/scishow Instagram: http://instagram.com/thescishow Facebook: http://www.facebook.com/scishow #SciShow #science #education #learning #complexly ---------- Sources & Images Sources: https://drive.google.com/file/d/1AvqUeOkWd427nDiBGVdpN2M-sF6vEwAQ/view?usp=sharing