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  1. Fulltext Hepatitis A virus: declining seroprevalence in children and adolescents in Southeast Asia
    Kunasol P, Cooksley G, Chan VF, Isahak I, John J, Loleka S, et al.
    Southeast Asian J. Trop. Med. Public Health, 1998 Jun;29(2):255-62.
    PMID: 9886108
    The prevalence of hepatitis A virus (HAV) in a country largely reflects its standards of hygiene and socioeconomic conditions. Countries which undergo socioeconomic development show major change in HAV prevalence from high to low endemicity, and this is largely reflected in patterns of age-related seroprevalence. This paper presents age-related HAV seroprevalence patterns of SE Asian countries, and highlights how these patterns have changed over recent decades. Singapore, Thailand and Malaysia have experienced a decline in childhood and adolescent HAV seroprevalence, typical of countries which undergo socioeconomic development. By contrast, India has remained a country of high endemicity, with almost universal seroconversion in childhood. The Philippines and Vietnam show age-related seroprevalence patterns typical of high to moderate endemicity, while Indonesia shows significant regional variation in HAV seroprevalence. Populations within countries which exhibit major improvements in endemicity and age related HAV seroprevalence patterns are at risk of HAV epidemics, and a paradoxical increase in incidence tends to occur as seroconversion shifts from children to adults. The residents of these countries, a significant number of whom are at-risk, would benefit from a program of vaccination, as would non-infected individuals visiting high-risk areas.
    Matched MeSH terms: Hepatitis A/blood
  2. Fulltext Detection of virus-specific polymeric immunoglobulin A in acute hepatitis A, C, E virus serum samples using novel chimeric secretory component
    Mohd Hanafiah K, Garcia ML, Barnes NC, Anderson DA
    BMC Res Notes, 2018 Oct 01;11(1):688.
    PMID: 30285838 DOI: 10.1186/s13104-018-3799-2
    OBJECTIVE: To conduct a proof-of-concept study on preferential binding of polymeric IgA (pIgA) using a novel recombinant rabbit/human chimeric secretory component (cSC) and preliminary assessment of the diagnostic potential of virus-specific pIgA in discriminating acute hepatitis A, E, and C (HAV, HEV, HCV) patients and uninfected controls using an indirect enzyme-linked immunoassay.

    RESULTS: cSC binds > 0.06 μg/ml of purified human and mouse pIgA with negligible cross-reactivity against IgM and IgA. Virus-specific pIgA was significantly higher in serum of acute HAV (n = 6) and HEV (n = 12) patients than uninfected samples (HEV: p 

    Matched MeSH terms: Hepatitis A/blood*
  3. Fulltext Anti-hepatitis A seroprevalence among chronic viral hepatitis patients in Kelantan, Malaysia
    Ahmad F, Hamzah NA, Mustaffa N, Gan SH
    World J Gastroenterol, 2011 Sep 28;17(36):4130-4.
    PMID: 22039329 DOI: 10.3748/wjg.v17.i36.4130
    To determine the seroprevalence of anti-hepatitis A virus (HAV) antibodies in patients with chronic liver disease (CLD) and to justify the need for hepatitis A vaccination.
    Matched MeSH terms: Hepatitis A/blood*
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