Prevalence Of Syphilis, Neurosyphilis And Associated Factors In a Cross-Sectional Analysis Of HIV Infected Patients Attending Bugando Medical Centre Mwanza Tanzania
Abstract Background: HIV-syphilis co-infection is a combination that enhances rapid progression of early syphilis or late latent syphilis to neurosyphilis and can cause catastrophic neurological complications. In studies in Mwanza, syphilis affects ~8% of healthy outpatients, and older studies have suggested that up to 23.5% of HIV-syphilis co-infected patients also have neurosyphilis. The study aimed at determining the prevalence of syphilis, neurosyphilis and associated factors among HIV infected patients attending Bugando Medical Center.Methods: This was a cross sectional study in which HIV infected patients who were hospitalized or attending the outpatient Care and Treatment Clinic (CTC) were interviewed using structured questionnaire and screened for syphilis using serum Treponema Pallidum hemagglutination assay (TPHA). We included all HIV-infected persons aged 18 years and above who consented. Blood was also taken for CD4+ T cells and viral load. Those who were found to have syphilis underwent neurological examination for any neurologic deficit and offered lumbar puncture.Results: The prevalence of syphilis in HIV infected patients was found to be 9.6%. The majority of these were female (72.5%) and median age was 42 years [interquartile range, 32-50]. Most patients were on ART (99.4%).The majority of participants with syphilis (89.2%) reported not knowing that they had syphilis, and had not previously been treated. One hundred forty one participants with syphilis had neurological examinations performed, 4 of whom had abnormal findings that necessitated that they undergo lumbar puncture. One of these had confirmed neurosyphilis.Conclusion: The high prevalence of syphilis in HIV infected patients indicates that there is a need to increase efforts in targeting this population to reduce sexually transmitted infections. Screening for syphilis should be done for all HIV patients given the high prevalence of the infection and the risk that aggressive forms of neurosyphilis can occur despite recovery of CD4+Tcell counts in untreated syphilis.