81.   My hospital room was small and had a special air lock to prevent infections.

82.   Nor do they prevent infection by HIV, the human immunodeficiency virus that causes AIDS.

83.   Nothing serious, but something that required immediate surgery to prevent infection.

84.   Officials at first said the antibiotics would be enough to prevent infection.

85.   One approach involves naturally occuring molecules called beta-chemokines, which are credited with preventing HIV infection in some hemophiliacs.

86.   One is among uninfected individuals to determine whether it can prevent infection.

87.   Other projects aim at preventing infections or treating them once they occur.

88.   Other scientists say the experiments mark a new approach to the frustrating search for a vaccine that would prevent infection by HIV, the AIDS virus.

89.   Pelosi said voluntary cooperation is the key to getting people to prevent HIV infection and seek care for it.

90.   Preventing new infections, officials in this commonwealth say, has been difficult even when the women is aware of the danger.