How does SOPHID complement other national HIV surveillance systems?
Difference between newly diagnosed and prevalent diagnosed infections. The HIV and AIDS patient reporting system (HAP) collects information on individuals with newly diagnosed HIV and AIDS. Neither annual, nor cumulative reports of new HIV diagnoses can give a measure of individuals who are currently living with diagnosed HIV in the UK since these cannot take into account movement out of the UK or unreported deaths. SOPHID collects reports of individuals living with HIV who have been in contact with the NHS and is therefore a good measure of the annual prevalent HIV diagnosed population and the demand on services. Estimating the number of HIV-infected but undiagnosed individuals Some individuals infected with HIV and living in the UK have not yet been diagnosed. These individuals cannot be detected by either surveillance of new diagnoses (HAP) or SOPHID. The total estimated national number of HIV-infected individuals (diagnosed and undiagnosed) can be estimated using multiple sources o
