21. Tejada said the girl had never had a blood transfusion, a possible source of infection . 22. With swollen glands, it is more important to diagnose and treat the source of infection . 23. Similarly, bullets and other foreign bodies may become sources of infection if left in place. 24. He said the source of infection was local, and that no humans had been infected. 25. It was a source of infection in humans. 26. Some sources of infection require surgical intervention including necrotizing fasciitis, intestinal ischemia, or infected medical devices. 27. Premises that are heavily contaminated with vesivirus can be a source of infection for several months. 28. Environmental studies continue to identify novel sources of infection , leading to regular revisions of guidelines and regulations. 29. This left open the possibility that infected animals might be a continued source of infection in humans. 30. But we've had many potential sources of infection including deer, elk and sheep infected with similar diseases.
