51.   Health officials have long called for a vaccine to prevent infection with HIV, the virus that causes AIDS.

52.   Hepatitis A vaccine is eventually expected to replace immune globulin as a means to prevent infection.

53.   His body is washed and covered with salve twice a day to help prevent infection.

54.   Hopes for a vaccine that can completely prevent HIV infection are fading, however, so attention is shifting toward vaccines that might slow the progression to AIDS.

55.   How early feeding may prevent infection is not clear, Thomas says.

56.   If it works in humans, the drug, called PMPA, would be useful in preventing infection among health-care workers exposed to AIDS-infected blood.

57.   If such a vaccine could be made safe, it would offer the best hope for an effective vaccine to prevent infection with the human immunodeficiency virus.

58.   If so, can they be used to stop progression to AIDS in infected individuals and possibly prevent infection in the first place?

59.   In fact, making a family tick check a part of your daily routine is a good idea, because the prompt removal of ticks can help prevent infection.

60.   In hepatitis and rabies, post-exposure immunization can prevent infection.