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  • Q&A with Australian Health Practitioners

    I have a diaphram, will it protect me from getting and STD or STI?

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    Obstetrician and Gynaecologist Dr Tony Bushati is a specialist Obstetrician & Gynaecologist with a particular interest in general and high risk obstetric, miscarriage, laparoscopic surgery … View Profile

    The most comprehensive research to date which assists in answering your question is the “Mira” trial. The trial found that in the context of a comprehensive HIV prevention package, including condom provision, there was no added protective benefit from the diaphragm and lubricant. The HIV infection rates observed in the trial were the same in both the control arm (where women received condoms only) and the intervention arm (condom plus diaphragm plus lubricant). So the authors concluded that adding a diaphragm to the male condom does not offer any benefit for HIV protection. The study could not evaluate whether using the diaphragm was better than using nothing, because it was not designed to answer this question.
    Other trials have shown that the cervical cells are the most vulnerable to certain STI and use of a diaphragm with spermicide may offer some protection. Also they may protect against HPV infection.
    To summarise, diaphragms are a useful tool in prevention against an unwanted pregnancy. While there may be some benefits in using diaphragms to protect against STI and PID, the best prevention method is a male condom.

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