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Full results show AIDS vaccine is of modest help

UNDATED (AP) - Scientists say further analysis of tests on an
experimental AIDS vaccine offer disappointment and cause for

The latest results confirm that it is only marginally effective
and suggest that its protection against HIV infection may wane over

But scientists say one exciting part is that the vaccine does
seem to have some effect, the first time that's happened.

Scientists also think blood samples from the trial may show how
to make a vaccine that does a better job.

The results also hint that the vaccine may work better in the
general population than in those at higher risk of infection.

The test was done using thousands of HIV-negative men and women
in Thailand ages 18 to 30 at average risk of becoming infected.

The results were published online Tuesday by the New England
Journal of Medicine.

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