Three senators tested positive for COVID-19 on Thursday, Aug. 19, though all are fully vaccinated, making them the latest breakthrough cases in Congress.

Sen. John Hickenlooper (D-Colo.), Sen. Angus King (I-Maine), and Sen. Roger Wicker (R-Miss.) all released statements about their positive diagnoses within hours of each other, all saying they had just mild symptoms, according to NPR.

“I’ve tested positive for a breakthrough case of COVID-19,” Hickenlooper tweeted. “I feel good but will isolate per docs instructions. I’m grateful for the vaccine (& the scientists behind it!) for limiting my symptoms.”

The Democrat senator also used the chance to urge people to get vaccinated.

“If you haven’t gotten your shot—get it today! And a booster when it’s available too!,” he added.

In his tweet, Sen. King said that “Despite taking precautions and receiving the vaccine, this morning I tested positive for COVID-19.”

“While I am not feeling great, I’m definitely feeling much better than I would have without the vaccine. I am taking this diagnosis very seriously, quarantining myself at home and telling the few people I’ve been in contact with to get tested in order to limit any further spread,” King said in an attached statement.

The office of Sen. Wicker issued a statement saying he tested positive for the COVID-19 virus on Thursday morning after immediately seeking a test due to mild symptoms. 

“Senator Wicker is fully vaccinated against COVID-19, is in good health, and is being treated by his Tupelo-based physician. He is isolating, and everyone with whom Senator Wicker has come in close contact recently has been notified,” the statement read.

Though all the three Senate lawmakers are breakthrough infections, none complained about the lack of effectiveness of the vaccines they had got.

In Capitol Hill, South Carolina Sen. Lindsey Graham and Rep. Ralph Norman and Florida Rep. Vern Buchanan have recently announced similar breakthrough infections.

The new cases emerged following the rise of the more transmissible Delta variant of COVID-19 throughout the United States, including in Washington, D.C.

Before these latest cases, Congress saw a nearly six-month pause for lawmakers dealing with COVID-19 after a majority of more than 500 lawmakers were fully vaccinated by January.