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AIDS can Be Prevented by Using Diaphragm During Intercourse

A clinical trial involving 5,045 women in South Africa and Zimbabwe found no statistical difference in the rate of new HIV infections in the two study arms: those who received a diaphragm plus lubricant along with male condoms for their partners and those who only received male condoms.

In the context of a comprehensive HIV prevention package provided to all participants, the trial found no additional protective benefit against HIV infection from adding the diaphragm plus lubricant in the intervention arm, said the trials lead investigator, Nancy Padian, PhD, director of UCSFs Womens Global Health Imperative.

The study, to be published online in The Lancet, reported an overall HIV incidence rate of 4.0 percent: 4.1 percent in the intervention arm that included provision of diaphragm and lubricant and 3.9 percent in the control arm that included only provision of condoms. Findings also showed 158 new HIV infections in the intervention arm and 151 in the control group.

These results do not support the addition of the diaphragm to current HIV prevention strategies. Condoms remain the only proven barrier method for HIV prevention, said Padian.

All participants in the trial received a comprehensive package of safer-sex and family planning counseling, free male condoms, diagnosis and treatment of curable sexually transmitted infections, and free contraception.

The investigators could not evaluate whether using the diaphragm alone was better than using nothing, because most women in both arms of the trial reported male condom use.

The trial, known at Methods for Improving Reproductive Health in Africa, or MIRA, began in 2003 and was conducted at sites in Harare, Zimbabwe, and Soweto and Durban, South Africa.

The trial was launched because previous data has suggested that the cells in the cervix are particularly vulnerable to HIV infection, and use of a diaphragm presented the potentia l for protection. A flexible, dome-shaped rubber disk, a diaphragm is inserted vaginally with a gel to cover the cervix.


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