California GOP Senate challenger Carly Fiorina is in the hospital to be treated for an infection associated with her reconstructive surgery after breast cancer.

Deborah Bowker, the campaign's chief of staff, says in a statement issued Tuesday that Fiorina was admitted to a hospital and is being treated with antibiotics. The campaign will not say when or where she was admitted.

Fiorina, who is 56, fought breast cancer before her run against Democratic Sen. Barbara Boxer. The former Hewlett-Packard Co. CEO has maintained a busy campaign schedule in the final weeks of the race.

Bowker says Fiorina has canceled Tuesday campaign events in Riverside and Coachella. She says she expects Fiorina to return to the campaign trail soon.

Here is the full statement issued: "Carly learned more than a year and a half ago that she, like millions of women, had breast cancer. After successfully battling cancer, she had reconstructive surgery this summer and remains cancer free today. However, this morning Carly came down with an infection associated with the reconstructive surgery and, as a result, she was admitted to the hospital to receive antibiotics to treat this infection. While this will impact her campaign schedule today, Carly is upbeat and her doctors expect her to make a quick and full recovery and be back out on the campaign trail soon. Carly is looking forward to getting back to her full campaign schedule and to defeating Barbara Boxer on November 2."