Acute hepatitis E virus (HEV) infection is typically self-limiting and has a favourable prognosis. However, certain populations such as patients with pre-existing chronic liver disease may experience severe manifestations, including progression to acute-on-chronic liver failure (ACLF). Among viral hepatitis types, hepatitis A, E, and B are major causes of ACLF. Active screening and early diagnosis of HEV infection in patients with cirrhosis, especially those who develop ACLF, can improve management and enable timely antiviral therapy. Preventive measures, including HEV vaccination for high-risk groups, could reduce the morbidity and mortality associated with hepatitis E.
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Background/Aims Studies of hepatic steatosis (HS) effect on COVID-19 vaccine immunogenicity are lacking. We aimed to compare immunogenicity of BNT162b2 and CoronaVac among moderate/severe HS and control subjects.
Methods Two hundred ninety-five subjects who received BNT162b2 or CoronaVac vaccines from five vaccination centers were categorized into moderate/severe HS (controlled attenuation parameter ≥268 dB/m on transient elastography) (n=74) or control (n=221) groups. Primary outcomes were seroconversion rates of neutralising antibody by live virus Microneutralization (vMN) assay (titer ≥10) at day21 (BNT162b2) or day28 (CoronaVac) and day56 (both). Secondary outcome was highest-tier titer response (top 25% of vMN titer; cutoff: 160 [BNT162b2] and 20 [CoronaVac]) at day 56.
Results For BNT162b2 (n=228, 77.3%), there was no statistical differences in seroconversion rates (day21: 71.7% vs. 76.6%; day56: 100% vs. 100%) or vMN geometric mean titer (GMT) (day21: 13.2 vs. 13.3; day56: 91.9 vs. 101.4) among moderate/severe HS and control groups respectively. However, lower proportion of moderate/severe HS patients had highest-tier response (day56: 5.0% vs. 15.5%; P=0.037). For CoronaVac (n=67, 22.7%), there was no statistical differences in seroconversion rates (day21: 7.1% vs. 15.1%; day56: 64.3% vs. 83.0%) or vMN GMT (5.3 vs. 5.8,) at day28. However, moderate/severe HS patients had lower vMN GMT (9.1 vs. 14.8, P=0.021) at day 56 with lower proportion having highest-tier response (21.4% vs. 52.8%, P=0.036).
Conclusions While there was no difference in seroconversion rate between moderate/severe HS and control groups after two doses of vaccine, a lower proportion of moderate/severe HS patients achieved highest-tier response for either BNT162b2 or CoronaVac.
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Hepatitis A virus is one of the most frequent causes of foodborne infection, which is closely associated with sanitary conditions and hygienic practices. The clinical spectrum of acute hepatitis A is wide, ranging from mild case without any noticeable symptoms to severe case with acute liver failure leading to mortality. The severity and outcome are highly correlated with age at infection. In developing countries, most people are infected in early childhood without significant symptom. Ironically, in area where sanitary condition has improved rapidly, adults who do not have immunity for viral hepatitis A (VH-A) in early childhood is accumulating. Adults without immunity are exposed to risks of symptomatic disease and large outbreaks in society. In Korea, where hygiene has improved rapidly, acute hepatitis A is a significant health burden that needs to be managed with nationwide health policy. The incidence of symptomatic VH-A has increased since 2000 and peaked in 2009. Korea has designated hepatitis A as a group 1 nationally notifiable infectious disease in 2001. Since 2001, mandatory surveillance system has been established to detect every single case of acute hepatitis A. Universal, nationwide vaccination program for newborns was introduced in 2015. In this review, we will present the current epidemiologic status of viral hepatitis A, and evaluate the effectiveness of the current nationwide strategies for the control of viral hepatitis A in Korea. Furthermore, we presented some action proposals that can help eliminate viral hepatitis A, which is a significant health burden in Korea.
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Fighting Hepatitis B in North Korea: Feasibility of a Bi-modal Prevention Strategy Markus Unnewehr, August Stich Journal of Korean Medical Science.2015; 30(11): 1584. CrossRef
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Comparison of Clinical Manifestations and Outcomes between Hepatitis B Virus- and Hepatitis C Virus-Related Hepatocellular Carcinoma: Analysis of a Nationwide Cohort Dong Hyun Sinn, Geum-Youn Gwak, Juhee Cho, Seung Woon Paik, Byung Chul Yoo, Pierre Roques PLoS ONE.2014; 9(11): e112184. CrossRef
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Clinical Characteristics and Treatment of Patients with IgA Nephropathy and Hepatitis B Surface Antigen In O Sun, Yu Ah Hong, Hoon Suk Park, Sun Ryoung Choi, Byung Ha Chung, Cheol Whee Park, Chul Woo Yang, Yong Soo Kim, Bum Soon Choi Renal Failure.2013; 35(4): 446. CrossRef
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KASL Clinical Practice Guidelines: Management of chronic hepatitis B
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