1.   American Home Products Corp. told an expert government panel today that its vaccine can help ward off the most common cause of diarrhea in infants.

2.   AIDS VACCINE ENCOUNTERS OBSTACLES After more than a decade of testing, Immune Response has not produced convincing evidence that its AIDS vaccine helps patients.

3.   But a top Harvard researcher of human AIDS vaccines was considerably less sanguine that the cat vaccine might help humans.

4.   Researchers conclude that such vaccines may help many patients with this deadly disease.

5.   So the vaccine may help fend off symptoms.

6.   An easily administered nasal vaccine might also help vaccination campaigns in developing countries.

7.   And any vaccine would not help those already stricken with the disease.

8.   But an animal study suggests the vaccine might help.

9.   Flu vaccines could help day-care children and their school-aged siblings stay well and reduce the use of over-prescribed antibiotics, a new study suggests.

10.   Salk believed the vaccine would help immune cells recognize HIV earlier and begin fighting it.