First study of hepatitis delta virus in Algeria: Seroprevalence and risk factors in Setif region (east of Algeria).

BACKGROUND

No recent data are available on hepatitis delta virus (HDV) prevalence in Algeria. For this reason we conducted an epidemiological study, cross-sectional seroprevalence of HDV in the region of Setif.

METHODS

Between 2011 and 2014, sera samples of 500 patients (carrying HBsAg) admitted to the Division of Infectious Diseases Teaching Hospital, Setif (east of Algeria), were tested for anti-HDV-IgG ab (ETI-AB-DeltaK-2).

RESULTS

The prevalence of HDV obtained is estimated at 2.4%. The prevalence ranges from 1% in chronic hepatitis to 11.1% in cirrhotic hepatitis (low endemic area). Seropositivity rate is closely correlated with age (Odds ratio [OR] = 9.98, = 0.000) and gender (OR = 0.24, = 0.025); it reaches 58.3% in the age group of 51-60 years and 0% in children (age group 1-15 years); it represents 75% in females and 25% in males. The presence of familial cases of HBsAg positive (OR = 4.54, = 0.006), the endoscopic procedure (OR = 6.54, = 0.000) and tattooing (OR = 20, = 0.000) were found to be the transmission risk factors. A statistically significant relationship was found between the positivity of anti-HDV and advanced liver disease, cirrhosis (OR = 9. 16, = 0.000). A significant correlation was found between the positivity of anti-HDV with diabetes (OR = 6.83, = 0.000), obesity (OR = 4.19, = 0.009) and viral suppression B (OR = 5.69, = 0.003).

CONCLUSION

Our results show that HDV infection is low in Algeria. Research for total anti-HDV should be part of the initial assessment of patient care with viral hepatitis B as well as the prevalence of other viruses (hepatitis C [HCV] and HIV). A multicentre study should be carried out to know the importance of HDV infection and identify the risk groups.