Viruses like Avian flu, Ebola and Marburg often fester in animals before moving into human populations. Animals in regions that are geographically remote present particular challenges for disease containment. But in Thailand, local residents are using technology, including digital scanning, to track animals and stop outbreaks before they start. Special correspondent Fred de Sam Lazaro reports. Stream your PBS favorites with the PBS app: https://to.pbs.org/2Jb8twG Find more from PBS NewsHour at https://www.pbs.org/newshour Subscribe to our YouTube channel: https://bit.ly/2HfsCD6 Follow us: Facebook: http://www.pbs.org/newshour Twitter: http://www.twitter.com/newshour Instagram: http://www.instagram.com/newshour Snapchat: @pbsnews Subscribe: PBS NewsHour podcasts: https://www.pbs.org/newshour/podcasts Newsletters: https://www.pbs.org/newshour/subscribe