Congress now has its first known case of coronavirus. 

Rep. Mario Diaz-Balart (R- Florida) tweeted yesterday that he has tested positive for the virus.

CORONAVIRUS TRACKER - Cases in the tri-state area       

His office says he is feeling much better now, but dealt with a fever and headache Saturday night.

He's been in self-quarantine since March 13.

At least 15 other members of Congress are taking steps to self-quarantine as a precaution.