In a world's first such case, a team of Australian neurosurgeons has removed an eight cm-long parasitic roundworm from a patient who complained of forgetfulness and depression.

The world's first case of a new parasitic infection in humans was discovered by researchers at The Australian National University (ANU) and the Canberra Hospital after they detected a live roundworm from a carpet python in the brain of a 64-year-old Australian woman.