CBS/AP/ April 18, 2011, 9:42 AM

HIV prevention pill found to help men, not women

Bottles of antiretroviral drug Truvada are displayed at Jack's Pharmacy on November 23, 2010 in San Anselmo, California.

Bottles of antiretroviral drug Truvada are displayed at Jack's Pharmacy on November 23, 2010 in San Anselmo, California. / Justin Sullivan/Getty Images

Researchers are stopping a study testing a daily pill to prevent infection with the AIDS virus in thousands of African women.

Partial results show that women taking Truvada, made by Gilead Sciences Inc., are just as likely to get HIV as other women who take dummy pills.

Even if the study continues, it will not be able to determine whether the pills do any good. The results are a disappointment because a study last fall found that Truvada did help prevent infections in gay and bisexual men, and many AIDS experts view it as a breakthrough.

The new study's results were announced on Monday.

In the earlier study on Truvada, researchers found that the drug cut new HIV infections by 44 percent among gay and bisexual men, reports WebMD.

The study of the effects of Truvada on men began in 2007 in Brazil, Ecuador, Peru, South Africa, Thailand, and the U.S.

The Wall Street Journal reports that Truvada had U.S. sales of $1.3 billion last year.

© 2011 CBS Interactive Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.
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Samiki888 says:
"Researchers are stopping a study testing a daily pill to prevent infection with the AIDS virus in thousands of African women".
so now we're Guinea pigs? Lord knows what this medicine probably did to these women..***?
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jcnbma says:
"The results are a disappointment because a study last fall found that Truvada did help prevent infections in gay and bisexual men..."

HUH?
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jcnbma says:
"The results are a disappointment because a study last fall found that Truvada did help prevent infections in gay and bisexual men..."

HUH?
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PourpaixPourpaix replies:
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Haven't you heard? Women now shall be treated equally in every way which means spending any money that might help men in any way is not allowed. Once a drug is shown to predominantly help men, all funding must cease so the money can be properly redirected to women's projects. What is obviously sought are drugs that cure women while preserving men's appropriate fate of dying the slow and early death that they so evidently deserve, leaving all the money to the women, of course, so they can live the lives they deserve.