Seroepidemiology of Hepatitis Viruses and Hepatitis B Genotypes of Female Marriage Immigrants in Korea

Kwon, Jae Cheol; Chang, Heon-Young; Kwon, Oh Young; Park, Ji Hoon; Oh, In Soo; Kim, Hyung Joon; Lee, Jun Hyung; Roh, Ha-Jung; Lee, Hyun Woong

doi:10.3349/ymj.2018.59.9.1072

Cited by 6 publications

(5 citation statements)

References 35 publications

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“…Among the 35 included publications, the largest number were for Thailand (n = 20) [ 23 – 38 , 44 – 46 , 51 ] followed by Malaysia (n = 5) [ 20 , 41 – 43 , 47 ]. While most countries contributed with a single study to this review, two studies provided data for immigrants coming from Vietnam, Philippines, Cambodia, Lao PDR and Myanmar [ 18 , 21 ], no publications were found from Timor-Leste and Brunei. Twenty-two cross-sectional studies reported seroprevalence data while 13 publications reported only incidence data.…”

Section: Resultsmentioning

confidence: 99%

“…On the contrary, a survey from Vietnam [ 39 ], conducted in 1994, showed an almost complete seroconversion by 10 years of age. Twenty years later, a survey conducted between 2011 and 2017 among immigrant women in Korea [ 21 ] from countries including Cambodia (n = 58), the Philippines (n = 85) and Vietnam (n = 422), suggested an HAV endemicity age shift pattern in Vietnam (60% by 20–29 years of age and 80% by 30–40 years of age) and the Philippines (78% by 20–29 years of age and 72% by 30–40 years of age), but not in Cambodia (100% HAV seropositivity by 20–29 years of age).…”

Section: Resultsmentioning

confidence: 99%

“…Seroprevalence studies captured from Malaysia [ 20 ] and Vietnam [ 21 , 39 ] suggest that these countries might be at an intermediate endemicity level but fall short in determining the age at which a 50% threshold is reached ( Fig 3 ). In other words, the existing evidence is limited in assessing the age at midpoint of population immunity, defined as the youngest age at which half of the population has serologic evidence of prior exposure to HAV.…”

Section: Discussionmentioning

confidence: 99%

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Seroprevalence and incidence of hepatitis A in Southeast Asia: A systematic review

Hernández-Suárez

Saha

Lodroño³

et al. 2021

PLoS ONE

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Background A previous review on hepatitis A virus (HAV) seroprevalence in 2005 categorized Southeast Asia as a low HAV endemicity region. In 2010, the World Health Organization modified this from low to low/medium endemicity, pointing out that these estimates were based on limited evidence. Since then, there has been no attempt to review HAV epidemiology from this region. We conducted a systematic review of literature to collect information on HAV incidence and seroprevalence in select countries in the Southeast Asian region, specifically, The Association of Southeast Asian Nations over the last 20 years. Methodology This systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. From the relevant articles, we extracted data and conducted a risk of bias assessment of individual studies. Results The search yielded 22 and 13 publications on HAV seroprevalence and incidence, respectively. Overall, our findings point to a very low HAV endemicity profile in Thailand and Singapore and evidence of a shift towards low HAV endemicity in Indonesia, Lao People’s Democratic Republic, Malaysia, the Philippines, and Vietnam. Only Singapore, Thailand, Malaysia, and the Philippines have existing HAV disease surveillance and reported incidence rates below 1 per 100,000. Several outbreaks with varying magnitude documented in the region provide insights into the evolving epidemiology of HAV in the region. Risk of bias assessment of studies revealed that the individual studies were of low to medium risk. Conclusions/Significance The available HAV endemicity profiles in Southeast Asian countries, aside from Thailand, are limited and outdated, but suggest an endemicity shift in the region that is not fully documented yet. These findings highlight the need to update information on HAV epidemiology through strengthening of disease surveillance mechanisms to confirm the shift in HAV endemicity in the region.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Seroprevalence and incidence of hepatitis A in Southeast Asia: A systematic review

Hernández-Suárez

Saha

Lodroño³

et al. 2021

PLoS ONE

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“…In a 1981 study that recruited 564 Vietnamese refugees, 90% were positive for anti-HAV at 15 years old [ 105 ]. However, in a recent study that looked at 422 adult female immigrants from Vietnam, only 59% were seropositive [ 106 ]. Genotypic characterization of the virus showed that genotype 1A is the most common among pediatric patients diagnosed with hepatitis A [ 107 ].…”

Section: Epidemiology and Seroepidemiology Of Hepatitis A In The Who Wprmentioning

confidence: 99%

The Shifting Epidemiology of Hepatitis A in the World Health Organization Western Pacific Region

Gloriani,

de Paz-Silava,

Allison

et al. 2024

Vaccines

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Within the past few decades, improvement in sanitation and economic growth has driven a changing epidemiology of hepatitis A in the Western Pacific Region (WPR) of the World Health Organization (WHO). In this review, we gathered available published information on hepatitis A epidemiology of the countries in the WPR and reviewed the trends reported in the literature from the years 2000 to 2021. Many countries have shifted from high endemicity to low endemicity. Moreover, the administration of the hepatitis A vaccine among children in recent years has shifted disease susceptibility to the older population. Seroprevalence among children has decreased in most countries, while nearly 100% seropositivity is seen in mid adulthood. This is contrary to the epidemiology seen in previous decades when most children achieved immunity by age ten. This also presents a paradox in that better living conditions have caused more vulnerability to the older age groups who are at higher risk for severe disease. Given these trends, we recommend vaccination of vulnerable populations such as the older age groups and inclusion of the hepatitis A vaccine in government immunization programs.

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“…Refs. [ 10 , 11 , 16 , 17 , 18 , 19 , 20 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , …”

Section: Table A1unclassified

Systematic Review of Hepatitis C Virus Prevalence in the WHO Western Pacific Region

Iversen

Wand

Chan

et al. 2022

Viruses

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Background: This review aimed to identify hepatitis C virus (HCV) prevalence estimates among the general population and six key populations (people who inject drugs, men who have sex with men, sex workers, prisoners/detainees, Indigenous people, and migrants) in the World Health Organization Western Pacific Region (WHO WPR). Methods: Original research articles published between 2016 and 2020 were identified from bibliographic databases. Publications were retrieved, replicas removed, and abstracts screened. Retained full texts were assessed and excluded if inclusion criteria were not met. Methodological quality was assessed using the Johanna Briggs Institute critical appraisal checklist for prevalence data. Data on HCV exposure and active infection were extracted and aggregated and forest plots generated for each population by country. Results: There were no HCV prevalence estimates in any population for more than half of WPR countries and territories. Among the 76 estimates, 97% presented prevalence of exposure and 33% prevalence of active infection. General population viraemic prevalence was 1% or less, except in Mongolia. Results confirm the endemic nature of HCV among people who inject drugs, with estimates of exposure ranging from 30% in Cambodia to 76% in Hong Kong. Conclusions: Countries require detailed knowledge of HCV prevalence in diverse populations to evaluate the impact of efforts to support WHO HCV elimination goals. Results provide baseline estimates from which to monitor and evaluate progress and by which to benchmark future elimination efforts.

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Seroepidemiology of Hepatitis Viruses and Hepatitis B Genotypes of Female Marriage Immigrants in Korea

Cited by 6 publications

References 35 publications

Seroprevalence and incidence of hepatitis A in Southeast Asia: A systematic review

Seroprevalence and incidence of hepatitis A in Southeast Asia: A systematic review

The Shifting Epidemiology of Hepatitis A in the World Health Organization Western Pacific Region

Systematic Review of Hepatitis C Virus Prevalence in the WHO Western Pacific Region

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