Abstract:
:In order to investigate the shift in the rates and levels of antibody to hepatitis A virus, 567 children in 20 isolated groups of five day-care centers were observed over a period of 8 months during which the seasonal rise in hepatitis A morbidity occurs. Increases in the proportion of seropositive ranging from 5 to 37% were demonstrated in 6 groups, and were always associated with the occurrence of either overt or sub-clinical hepatitis A infection. High rates of seropositivity were also noted in the groups in which cases of hepatitis A had been registered prior to the period of observation. In some children with low and medium antibody levels, antibody titres showed further increases after reinfection. A substantial part of children retained low antibody titres during the entire period of observation, and eight previously sero-negative children developed low antibody levels after asymptomatic hepatitis A infections. In one group the spread of hepatitis A infection (clinical and asymptomatic) was prevented by the administration of commercially available immunoglobulin immediately after the discovery of an infected food handler. Passive antibodies were found in previously sero-negative children, and these antibodies dropped to undetectable levels two months after administration.
journal_name
Eur J Epidemioljournal_title
European journal of epidemiologyauthors
Prikazchikov SA,Balayan MSdoi
10.1007/BF00145647subject
Has Abstractpub_date
1987-12-01 00:00:00pages
370-6issue
4eissn
0393-2990issn
1573-7284journal_volume
3pub_type
杂志文章abstract::We compared blood pressure of individuals (mean age 59 y) born in western Holland between January 1945 and March 1946 (mothers exposed to the Dutch Famine before or during gestation; n = 359) to blood pressure of unexposed individuals born before or conceived after the famine (n = 299) or same-sex siblings of subjects...
journal_title:European journal of epidemiology
pub_type: 杂志文章
doi:10.1007/s10654-006-9065-2
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journal_title:European journal of epidemiology
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journal_title:European journal of epidemiology
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journal_title:European journal of epidemiology
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journal_title:European journal of epidemiology
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journal_title:European journal of epidemiology
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journal_title:European journal of epidemiology
pub_type: 杂志文章
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journal_title:European journal of epidemiology
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journal_title:European journal of epidemiology
pub_type: 杂志文章,meta分析
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journal_title:European journal of epidemiology
pub_type: 杂志文章
doi:10.1007/s10654-016-0177-z
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