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HIV infection is transmitted via sexual and blood contact. Other infections such as hepatitis C, HPV, syphilis and gonorrhea may also be transmitted in these ways. These infections are more common among people living with and at risk of HIV. Their presence in the genital tract may also increase the likelihood of HIV transmission. As well, the body’s immune response to a variety of infections may increase the negative health impacts of HIV infection, and make comorbidities associated with “immunoaging” more common. Research in this areas aims to better understand all of these interactions, and to develop and evaluate best practices in sexual health promotion, disease screening and management of people with coinfections.

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