Senator Elizabeth Warren of Massachusetts and Senator Cory Booker of New Jersey have tested positive for COVID-19.

Warren made the announcement Sunday on Twitter, saying she only has mild symptoms thanks to the vaccine and booster shot.

"As cases increase across the country, I urge everyone who has not already done so to get the vaccine and the booster as soon as possible - together, we can save lives," she tweeted.

Booker made the same announcement just hours later on Twitter, saying his symptoms are "relatively mild."