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rdf:type | |
lifeskim:mentions | |
pubmed:dateCreated |
1993-2-1
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pubmed:abstractText |
Surveillance and seroepidemiological data are important in determining optimal hepatitis A vaccine strategies. In the USA, after a decade of declining rates, reported hepatitis A rates gradually increased from 9.2 cases per 100,000 population in 1983 to a peak of 14.4 per 100,000 in 1989. In 1991, 23,144 cases were reported, for a rate of 9.1 per 100,000. Since 1983, rates in males have been consistently 20% higher than in females. Rates in children, adolescents and adults up to 39 years old have been roughly equivalent and approximately threefold higher than for persons > or = 40 years old. Among reported cases in 1989, the most commonly reported risk factor was personal contact with a hepatitis A case (26%), followed by employment or attendance at a day-care centre (14%), a history of injecting drug use (11%), a history of recent international travel (4%), and association with a suspected food or waterborne outbreak (3%). Of cases, 42% had no known risk factor for infection. The prevalence of antibody to hepatitis A virus in the general US population was 38.2%, based upon testing of 9516 participants from the second National Health and Nutrition Examination Survey conducted from 1976 to 1980. Prevalence increased steadily with age, ranging from 11% in persons < 5 years of age to 74% in persons > or = 50 years old. Because some groups may be difficult to vaccinate prior to disease exposure (contacts of cases) or are difficult to reach (drug users or persons with unidentified risk), a selected risk group vaccination strategy may not be successful in reducing the disease burden in the USA.(ABSTRACT TRUNCATED AT 250 WORDS)
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:status |
MEDLINE
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pubmed:issn |
0264-410X
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
10 Suppl 1
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
S59-62
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:1476001-Adolescent,
pubmed-meshheading:1476001-Adult,
pubmed-meshheading:1476001-Age Factors,
pubmed-meshheading:1476001-Child,
pubmed-meshheading:1476001-Ethnic Groups,
pubmed-meshheading:1476001-Female,
pubmed-meshheading:1476001-Hepatitis A,
pubmed-meshheading:1476001-Humans,
pubmed-meshheading:1476001-Male,
pubmed-meshheading:1476001-Middle Aged,
pubmed-meshheading:1476001-Prevalence,
pubmed-meshheading:1476001-Risk Factors,
pubmed-meshheading:1476001-Sex Factors,
pubmed-meshheading:1476001-United States
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pubmed:year |
1992
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pubmed:articleTitle |
Epidemiology of hepatitis A: seroepidemiology and risk groups in the USA.
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pubmed:affiliation |
Hepatitis Branch, Centers for Disease Control, Atlanta, GA 30333.
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pubmed:publicationType |
Journal Article,
Comparative Study
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