The California Public Health Department has halted the work of 13 genetic testing companies, barring them from selling tests without a doctor’s orders. Today the companies must detail how they’ll “prevent further violation of California state laboratory law” to the health department. The Takeaway talks with Wired's Alexis Madrigal about the intertwined issues of privacy and public health, and whether there’s a potential health benefit from barring individuals from their own genetic information.