11.   Another concern is the spread of antibiotic-resistant bacteria, which cause infections that can be very difficult to treat.

12.   Antibiotic-resistant bacteria may go on to cause infections that can be treated only with difficulty, or not at all.

13.   Antibiotics decrease the bacteria that cause the infections.

14.   At first, no one knew what was causing the infection, which can be detected in a bird at a feeder even without binoculars.

15.   Biting has been reported to rarely cause HIV infection.

16.   A rare complication of leprosy, ENL causes painful nodules which can cause infection, scarring or skin ulcers.

17.   According to the report, medical errors include such events as botched surgeries, doctors prescribing the wrong drugs and nurses causing infections because of poor hygiene.

18.   Both diseases can cause mild infection in birds, and Eastern is highly lethal to horses.

19.   Bullough pointed out that although much has been learned about the role flu hemagglutinin plays in causing infection, many questions remain.

20.   But in another breakthrough the babies were no longer being fed intravenously, which doctors say can cause infection.