CNN) -- Sen. Hillary Rodham Clinton fainted during a lunchtime speech Monday in Buffalo, New York, but revived and continued her scheduled appearances, aides said. "Indeed, our senator fainted -- hadn't felt well this morning and had a full day," Clinton chief of staff Tamera Luzzato said in an e-mail. The senator's press secretary, Philippe Reines, said Clinton was suffering from a stomach virus during her talk. "She felt weak, needed to sit down and then fainted briefly," Reines said. "She received immediate medical attention at the site and is now proceeding with her schedule as planned." Clinton, 57, was...