Rep. Diana DeGette (D-Colo.) on Monday announced she had tested positive for a breakthrough case of COVID-19.
"I have tested positive for COVID-19. Thankfully, I am fully vaccinated and boosted and experiencing mild symptoms," DeGette wrote in a tweet.
"Per CDC guidelines, I will remain self-isolated and working from my home in Denver this week."
DeGette's announcement comes as the latest coronavirus surge, driven largely by the omicron variant, sweeps through Congress.
At least 14 members of the House and one senator tested positive for coronavirus this month, including Reps. Alexandria Ocasio-Cortez (D-N.Y.), Jim Cooper (R-Tenn.), Sean Casten (D-Ill.) and Young Kim (R-Calif.).
Overall, there have been at least 50 breakthrough cases of COVID-19 among vaccinated members of Congress since last summer. More than half of those breakthrough cases have been since mid-December.
Iowa Rep. Ashley Hinson (R) announced Friday that she had tested positive for the virus a second time within two years.
"Yesterday afternoon, I began experiencing mild, cold-like symptoms. I took a COVID-19 test and the results were positive. I am fully vaccinated and boosted against COVID-19," Hinson wrote in a tweet.
"I am isolating and following CDC guidance as well as the advice of the Attending Physician, and am currently working remotely in Washington, D.C. My team and I will continue working around the clock for Iowans and I look forward to being back at work, in-person, soon."