Sen. Bernie Sanders (I-VT) revealed Thursday that he contracted COVID-19 during the Senate's holiday break amid an increase in infections nationwide.

Sanders, 82, said his symptoms are mild and that he will continue to work from his home while in isolation as outlined by the Centers for Disease Control and Prevention.

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"I have tested positive for Covid," the senator posted to the social media platform X, formerly known as Twitter. "My symptoms are minimal and I will continue to work from home in Vermont while isolating in accordance with CDC guidance. I am glad to be fully up to date with the vaccine."

The infection comes after the Senate concluded its business for the year — it will return to session on Jan. 8, 2024. CDC guidelines recommend an infected person isolate for at least five days or until symptoms subside if symptoms stretch beyond that period. People are also encouraged to continue wearing a mask through day 10, regardless of when they end isolation.

The CDC has reported an increase in infections nationwide during the last few months, with the Northeast being hit the hardest by respiratory infections and viruses. The most prominent strain of the virus is currently JN.1, which is expected to account for 39-50% of all COVID-19 infections.

“JN.1’s continued growth suggests that the variant is either more transmissible or better at evading our immune systems than other circulating variants," according to the CDC. "It is too early to know whether or to what extent JN.1 will cause an increase in infections or hospitalizations."

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Existing vaccines, tests, and treatments still work against JN.1, per the CDC.

COVID-19 infections are at the highest levels since the 2022 surge of omicron variant. Most hospitalizations are among those 65 and older.