Lawmakers are being briefed that Havana syndrome is hitting US civilians too, and most of Congress had no idea.

• Diplomats, FBI and CIA staff, and now some members of Congress report the same symptoms.
• Civilian cases have been tracked since 2010, well before the 2016 date the government points to.
• Many lawmakers were completely unaware, with some asking whether it was real.
• Parts of the topic are classified, but the civilian case data is not, because agencies never acknowledged those cases.

Outlook: Expect pressure on Congress to open up the civilian side of Havana syndrome, which agencies have so far ignored.