The Health Protection Agency said the latest case brings the total to 21. The patient, who is being treated at the University Hospital of North Staffordshire, is a man in his 70s.
Two patients being treated for the disease since the spate of illnesses began in the middle of July have died.
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A mild night and another misty, grey start in places in the morning.
John Kelly said he was "broken hearted" by the criticism, adding the president had expressed his condolences "the best way that he could".
A survey by ITV News found Tory activists are surprisingly supportive of the Prime Minister, despite the result of the General Election.