11.   After a second operation, an infection developed.

12.   An infection developed after surgery.

13.   He underwent major surgery a week ago in an attempt to restore circulation to the foot, but a significant infection apparently developed during the procedure.

14.   Most hospital-acquired infections develop in surgical incisions, the urinary tract and the bloodstream.

15.   That is because the liver infection develops slowly and can now be treated only with expensive drugs that have potentially serious side effects and sometimes low rates of success.

16.   The fungus enters through the lungs and the resulting infection can develop into meningitis or other ailments.

17.   The researchers were struck by how quickly the infections can develop.