Congressman-elect Tom Reed was hospitalized last night for blood clotting in his lungs. He's expected to be released in a couple of days.
Update: Sean Carroll confirms that it's a Pulmonary Embolism (PE) probably caused by a clot thrown from his leg. This is a common malady for people who have been sitting on planes or in cars for long periods of time. It does strike young people. For example, David Bloom, a NBC News reporter, died of a PE at age 39 earlier this decade.