No abstract available.
Antibodies* ; Hepatitis Viruses* ; Hepatitis*

No abstract available.
Hepatitis Viruses* ; Hepatitis*

The nucleotide sequence from position 5966 to 6582 of the hepatitis E virus (HEV) genome was determined from a Vietnamese isolate obtained from the acute-phase sera of a sporadic case of acute hepatitis. This sequence was compared with the corresponding sequences of 17 HEV strains deposited in GenBank. This analysis revealed that the Vietnamese strain of HEV belongs to genotype 1 closely related to the Myanmar, India, and Nepal subtypes. Phylogenetic analysis demonstrated genotype-specific nucleotides and aminoacids within this region
Hepatitis E ; viruses

Composite recombinant antigens were constructed from diagnostically relevant antigenic regions derived from the hepatitis C virus (HCV) core, NS3, NS4 and NS5 proteins. Antigenic properties of each antigenic region included into these composite antigens were preliminary evaluated by testing recombinant proteins containing the HCV protein fragments of different sizes encoded by overlapping PCR fragments. Immunoreactive recombinant proteins were tested by EIA against a large panel of anti-HCV positive and negative serum specimens to identify the most immunoreactive and specific proteins. Three composite antigens were designed based on this analysis. The fist composite protein was composed of one antigenic region from core, NS3 and NS4. The second protein contained an additional NS4 region, while the third protein contained all immunodominant antigenic regions identified in this study. After EIA analysis for the detection of anti-HCV, each composite protein showed almost identical results compared to combining each of the corresponding individual proteins.
hepatitis C ; antigens ; viruses

In 1964, Blumberg B.S. found the antigen Au, a surface antigen of hepatitis B virus (HBSAg). Then the serum properties of hepatitis A, D, E and C were found, respectively. In 1995, the new hepatitis viruses including GB agent, hepatitis G virus, hepatitis TTV and hepatitis SEN viruses were found. In 1992, the vaccine of hepatitis A was introduced. There were many improvements of the treatment of hepatitis B and hepatitis C by the traditional and modern medicine
Hepatitis ; Hepatitis B virus ; hepatitis A ; hepatitis C ; Hepatitis Viruses

No abstract availalbe
Hepatitis Viruses* ; Hepatitis* ; Liver Diseases* ; Liver*

No abstract available.
Hepatitis Viruses* ; Hepatitis* ; Humans ; Portasystemic Shunt, Surgical*

859 patients with chronic hepatitis B virus (HBV) infection had followed from February 1997 to September 1998. The natural history of chronic HBV infection was described: Seroconvertion from HBeAg to anti-HBe is 9.6% per year; in which patients with high level of ALT the rate seroconvertion is 15.8%. The highest rate of spontaneous seroconversion occurred in the 20 to 40 age groups. The rate of seroconversion per year of HBsAg was low, about 1.2%; Patients with HBeAg positive may suffer from chronic hepatitis B at the rate of 16.8%. Cirrhosis and hepatocellular carcinoma commontly happened in the patients over 40 years old
Viruses ; Hepatitis Viruses ; Hepatitis B, Chronic ; Hepatitis B e Antigens ; Hepatitis B Surface Antigens ;

A study was carried out on 737 seamen working in maritime transport companies at Hai Phong. The results showed that the prevalence of hepatitis B virus (HBV) infection among seamen was 54,86%, in which 15.57% were found to be positive with HbsAg and 39.29% positive with anti HBs. The HBV infection rate increased with age. The highest HBV infection rate was in 30 – 49 age group. Furthermore, the HBV infection rate increased with the number of years of service, and was highest when people had worked for 6 – 15 years. HBV infection rate among the seamen with good knowledge on hepatitis was likely lower than that of the seamen with inadequate or incorrect knowledge about hepatitis
Epidemiology ; Hepatitis B virus ; viruses ; liver

With recent hygienic improvements in Korea, the occurrence of overt acute viral hepatitis A in adults is increasing. Acute viral hepatitis E, which has seldom been reported, has also been increasing in Korea over the past few years. Reports regarding coinfection of hepatitis A virus (HAV) and hepatitis E virus (HEV) and their clinical courses are very rare. Acute hepatitis A is usually improved by conservative management, but coinfection of HAV and HEV may lead to severe forms of disease. When a patient with acute hepatitis A presents with an atypical clinical course such as hepatic encephalopathy, HEV infection, which has identical transmission routes to HAV, must be considered. We report a case of coinfection of HAV and HEV with hepatic encephalopathy.
Adult ; Coinfection ; Hepatic Encephalopathy ; Hepatitis ; Hepatitis A ; Hepatitis A virus ; Hepatitis E ; Hepatitis E virus ; Humans ; Korea ; Viruses