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      • HBV : PE-028 ; Prevalence of hepatitis A, B, C and D viruses among patients with acute hepatitis in Mongolia

        ( O. Baatarkhuu ),( Do Young Kim ),( B Bayarmagna ),( N Khorolsuren Baigal ),( R Ouyngerel ),( D Enkhsaikhan ),( Y Dahgwahdorj ),( Sang Hoon Ahn ),( Kwang Hyub Han ) 대한간학회 2012 춘·추계 학술대회 (KASL) Vol.2012 No.-

        Background and Aims: Mongolia is an endemic area of acute and chronic viral hepatitis. To determine the prevalence of HAV, HBV, HCV and HDV infections among patients with acute hepatitis in Mongolia during outbreaks. Methods: A total of 624 patients (353 males and 271 females; age, 18.6±8.1 years; range 2-66 years) who were clinically diagnosed with acute hepatitis during outbreak from October 2011 to March 2012 in Ulaanbaatar, Mongolia have been studied. The prevalence of hepatitis virus infections was determined by testing of serum for the IgM class of antibodies against HAV, HBV, HCV, HDV, and HBsAg. Results: Acute hepatitis A (AHA) (IgM anti-HAV positive) was diagnosed in 284 patients (45.5%). Acute hepatitis B (AHB) (IgM anti-HBc positive) was diagnosed in 191 patients (30.6%) and 22 patients (3.5%) was diagnosed as co-infection of B and D. Acute hepatitis C (AHC) (IgM anti-HCV positive) was diagnosed in 33 patients (5.3%). There were 52 (8.3%) HBV carriers who had detectable HBsAg and anti-HDV but who were negative for both IgM anti-HAV and IgM anti-HBc, suggesting that they acquired type D acute hepatitis due to superinfection of HDV on a background of chronic HBV infection. Forty-two (6.5%) patients were found to be infected by various combinations of dual viruses such as HAV/HBV (2.8%), HAV/HDV (0.6%), HBV/HCV (2.5%), and HCV/HDV (0.6%). AHA was the most prevalent in subjects aged 1-19 years, AHB and HBV+HDV superinfection were the first and second most prevalent in the age group of 20-29 years, and AHC was the most common type in 40-49 years. Conclusion: Dual hepatitis viral infection was detected in approximately 6.5% among patients with acute hepatitis in Mongolia.

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