HBV, HCV, and HIV Seroprevalence in Hemodialysis Patients Admitted to a Tertiary Care Hospital in Mogadishu, Somalia

Abstract

Hemodialysis (HD) patients are a special group of patients who are at high risk for infection and related complications. Blood-borne viruses associated with chronic diseases such as hepatitis B virus (HBV), hepatitis C virus (HCV) and human immunodeficiency virus (HIV) are important causes of morbidity and mortality in HD patients. Immunodeficiency of the patients, weak protective efficacy of vaccines (HBV etc.), invasive vascular procedures, long-term dialysis applications and device-related contaminated blood contact risk, need for blood transfusion, medical practices associated with the risk of nosocomial transmission are some of the factors associated with an increased risk of infection transmission in HD patients. In addition to standard precautions to prevent infection transmission, some additional practices specific to HD patients have been recommended. HBV vaccination, patient isolation (special staff and use of separated rooms, devices, and equipment) in case of indication, precautions to be taken during catheter application (selection of catheter location, catheter care, skin antisepsis, and performing the procedures under appropriate and sterile conditions), monitoring patients for infection markers (before dialysis and at recommended intervals), taking into account inadequate antibody production and the long incubation period of viral infections are some examples of preventive procedures specific to HD patients. In this study, the prevalence of HBV, HCV and HIV infections in HD patients treated in a tertiary care hospital in Somalia was investigated. A total of 744 HD patients, 419 (56.3%) males and 325 (43.7%) females, were included in the study. The mean age of the patients was 50.81±17.62 (range 7-91) and the median age was 53. 660 of the patients were tested for anti-HBs (386 positive patients; 58.5%), 718 for HBsAg (63 positive patients, 8.8%), 720 for anti-HCV (19 positive patients, 2.6%), and 599 for anti-HIV (one positive patient 0.17%). Seropositivity rates were found to increase with age in HD patients, in line with the prevalence of viral agents in the population. In 718 patients tested for HBsAg, the positivity rates in men and women were 10.8% (44/406) and 6.1% (19/312), respectively, and the seropositivity rate was significantly higher in men (p=0.026). Anti-HCV seropositivity (2.6%) was approximately twice and significantly higher in HD patients than the hospital general prevalence (1.41%) (p=0.005). Emergency responses to injuries related to ongoing conflict across the country, invasive procedures performed outside the hospital and under unsuitable conditions, lack of molecular diagnostic tests for viral infections in identifying seronegative cases, patients apply to various centers with different capabilities for dialysis procedures and irregular patient follow-up records, missing hemodialysis sessions due to economic or other reasons, high prevalence of HBV, and lack of trained and specialized personnel draw attention as problems specific to the region.