Imported epidemic non-A, non-B hepatitis in Qatar

Area of Science:

• Hepatology
• Infectious Diseases
• Public Health

Background:

• Viral hepatitis remains a significant global health concern.
• Understanding the etiological agents and demographic distribution of viral hepatitis is crucial for effective public health interventions.

Purpose of the Study:

• To investigate the causes and transmission patterns of acute viral hepatitis among patients admitted to Hamad General Hospital in Qatar.
• To determine the prevalence of hepatitis A, B, and non-A, non-B hepatitis in this patient population.
• To identify risk factors and potential sources of infection, particularly among immigrant populations.

Main Methods:

• Retrospective analysis of 198 patients admitted with acute viral hepatitis over one year.
• Serological testing for hepatitis A virus (HAV), hepatitis B virus (HBV), and delta virus markers in 126 patients.
• Analysis of patient demographics, focusing on nationality and recent travel history.

Main Results:

• The majority of patients (94%) were immigrants, with only 6% being Qatari nationals.
• Hepatitis A accounted for 7 cases, and hepatitis B for 29 cases (none with delta antibody).
• Acute non-A, non-B hepatitis was diagnosed in 91 patients (73%), predominantly Indian immigrants presenting shortly after arrival, suggesting infection acquired in transit.

Conclusions:

• Acute viral hepatitis in Qatar disproportionately affects immigrant populations.
• Non-A, non-B hepatitis is the most common form, with evidence suggesting acquisition during transit from India.
• Hepatitis B is prevalent but not associated with delta virus in this cohort.