The predominant transmission mode of both HIV and other STIs is sexual intercourse. In addition, strong evidence supports several biological mechanisms through which STIs facilitate HIV transmission by increasing both HIV infectiousness and HIV susceptibility. Methods for preventing sexual transmission of HIV and STIs are the same, as are the target audiences for interventions.
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Human Immunodeficiency Virus (HIV)HIV continues to be one of the most important communicable diseases in the UK. It is an infection associated with serious morbidity, high costs of treatment and care, significant mortality and high number of potential years of life lost. The infection is still frequently regarded as stigmatising and has a prolonged ‘silent’ period during which it often remains undiagnosed. |
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Sexually Transmitted Infections (STIs)STIs are diseases that can be transmitted by unprotected sex between two people. Not everyone with an STI will have signs and symptoms of the condition. If a person does present with symptoms, these may include increased discharge, pain or ulcers. If the STIs are left undetected and untreated they may result in serious complications in later years. |
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Prevention GroupsHIV and STIs are not uniformly distributed in the UK population. There are population groups at particular risk of acquiring HIV and STIs. Here we summarise surveillance data and appropriate sexual health messages for populations that require targeted prevention. |
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Data for CommissionersThis page summarises HIV and STI epidemiology data that may be of use to sexual health commissioners. |