Her doctor revealed that the 68-year-old has pneumonia - hours after a video showed her collapsing into the arms of her Secret Service agents after being rushed from the memorial service at the World Trade Center.
Dr Lisa R Bardack said Sunday evening that Clinton had become overheated and dehydrated at the event in lower Manhattan. Bardack said Clinton is now 'recovering nicely' at her home in Chappaqua, New York.
The Democratic nominee was scheduled to attend fundraisers on Monday and Tuesday in California, and tape an episode of Ellen DeGeneres' talk show. Clinton is now holed up in her upstate New York home after a bystander recorded her losing her balance, slumping at the knees and being held up by her aides while waiting to get in a minivan.