US Democratic presidential candidate Hillary Clinton has cancelled a two-day campaign trip to California, after being diagnosed with pneumonia. <br /><br /> Her near collapse at a 9-11 memorial ceremony in New York on Sunday has raised an element of uncertainty about her health less than two months before the election.<br /><br /> Clinton became ‘overheated’ at a ceremony at Ground Zero, her campaign spokesman said.<br /><br /> A video shows her slumping before being helped into a waiting secret service van as she leaves the event.<br /><br /> Her doctor, Lisa Bardack, said in a statement that she has been experiencing a cough related to allergies and that an examination on Friday showed that she was suffering from pneumonia.<br /><br /> Hillary Clinton has left her daughter’s apartment, where she headed after leaving the Sept. 11 commemoration early. pic.twitter.com/iyGHMfNI0R— NPR (@NPR) September 11, 2016<br /><br /> It comes at a crucial time in the White House race against Republican rival Donald Trump, and is likely to see renewed calls for both presidential candidates to reveal more about their health.<br /><br /> The first of three televised debates is in two weeks’ time. <br /><br /> Clinton, 68, had surgery in 2012 for a blood clot, although her doctors say she made a full recovery. <br /><br /> Two years her senior, Trump had previously questioned how fit she is for the presidency. In August the former Secretary of State’s personal physician declared her “in excellent health.”<br />
