Never miss a story: Get the FOX 61 app for breaking news alerts

Hillary Clinton to return to campaign trail Thursday after bout of pneumonia

WASHINGTON, DC - JULY 05:  Democratic presidential candidate Hillary Rodham Clinton waves after she addressed the 95th Representative Assembly of the National Education Association July 5, 2016 in Washington, DC. Clinton will be joined by President Barack Obama at a campaign stop in Charlotte, North Carolina later today.  (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - JULY 05: Democratic presidential candidate Hillary Rodham Clinton waves after she addressed the 95th Representative Assembly of the National Education Association July 5, 2016 in Washington, DC. Clinton will be joined by President Barack Obama at a campaign stop in Charlotte, North Carolina later today. (Photo by Alex Wong/Getty Images)

WASHINGTON — Hillary Clinton will resume campaign travel Thursday following a bout of pneumonia.

Clinton spokesman Nick Merrill says the Democratic nominee spent Tuesday reading briefing materials and making phone calls. She also watched President Barack Obama campaigning on her behalf in Philadelphia.

Clinton had planned to campaign Wednesday in Las Vegas. Former President Bill Clinton will headline the event in her place as she continues to recouperate.

Clinton was diagnosed with pneumonia Friday. But her campaign didn’t disclose the illness until Sunday, after video emerged showing her stumbling and being held up by aides after abruptly leaving a 9/11 memorial service in New York.