TODAY News May 12: Officials Monitor Passengers Amid Outbreak Concerns | Trump Set for High-Stakes China Visit | Late Night Hosts Reunite on Colbert

The latest on Americans quarantined and monitored for hantavirus, including passenger Jake Rosmarin who provides an update from his quarantine room. President Trump prepares for a high-stakes summit in China with Chinese President Xi Jinping. The latest on the conflict involving Iran and where the fragile ceasefire stands. And, late-night hosts reunite for a special ‘Late Show with Stephen Colbert’ episode ahead of his final broadcast.