Two more people have fallen sick due to an unknown bug affecting a ward at King Edward VII Memorial Hospital.Gordon Ward remains closed to admissions, and unwell patients are being kept under isolation.Seven of the 12 patients initially affected have recovered, a Bermuda Hospitals Board spokeswoman said.However another patient and one more staff member have fallen ill since the hospital informed the public about the bug on Monday.The bug’s symptoms include vomiting and diarrhoea. An analysis of samples to determine its cause will take time, the spokeswoman added.“A full investigation is ongoing to identify the exact cause, but individuals are recovering with the timely treatment of symptoms.”The spokeswoman said it was not unusual for hospitals around the world to experience “outbreaks of this nature”.“It is always important to respond swiftly to implement best practice infection control protocols to minimise the spread of any illness,” she said.“BHB is continuing to monitor the situation closely and will update the community as the facts are known.”