OHIO — Sen. Rob Portman, R-Ohio, released a statement Tuesday morning, saying he tested positive for COVID-19 Monday night. 

"In preparation for returning to Washington, D.C., I took an at-home COVID test last night and it was positive. I am asymptomatic and feel fine. I have been in contact with the attending physician and my personal doctor. I am following their medical advice and following CDC guidelines and isolating for the recommended five days. I will work remotely from home this week, but will not be able to be in Washington, D.C. for votes," Portman wrote. 

While he is working from home, Portman will not be able to cast votes.

The senator is vaccinated. He received the Johnson & Johnson vaccine during clinical trials. His office also confirmed Tuesday he has received the booster.

He is among a handful of lawmakers who have tested positive for COVID-19 in the last few weeks, including U.S. Sen. Elizabeth Warren (D-Mass.), Sen. Cory Booker (D-N.J.), Sen. Chris Coons (D-Del.), Rep. Bobby Rush (D-Ill.) and Rep. Jim Clyburn (D-S.C.).

In late December, the Centers for Disease Control and Prevention cut isolation restrictions for Americans who catch COVID-19 from 10 to five days, and shortened the time that close contacts need to quarantine.