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Risk factors associated with subclinical human infection with avian influenza A (H5N1) virus--Cambodia, 2006
- Source :
- The Journal of infectious diseases. 199(12)
- Publication Year :
- 2009
-
Abstract
- BACKGROUND: We conducted investigations in 2 villages in Cambodia where outbreaks of influenza H5N1 occurred among humans and poultry to determine the frequency of and risk factors for H5N1 virus transmission. METHODS: During May 2006, approximately 7 weeks after outbreaks of influenza H5N1 among poultry occurred, villagers living near households of 2 patients with influenza H5N1 were interviewed about potential H5N1 exposures and had blood samples obtained for H5N1 serological testing by microneutralization assay. A seropositive result was defined as an influenza H5N1 neutralizing antibody titer of 1:80, with confirmation by Western blot assay. A case-control study was conducted to identify risk factors for influenza H5N1 virus infection. Control subjects, who had seronegative results of tests, were matched with H5N1-seropositive persons by village residence, households with an influenza H5N1-infected poultry flock, sex, and age. RESULTS: Seven (1.0%) of 674 villagers tested seropositive for influenza H5N1 antibodies and did not report severe illness; 6 (85.7%) were male. The 7 H5N1-seropositive persons, all of whom were aged
- Subjects :
- Adult
medicine.medical_specialty
Time Factors
Adolescent
animal diseases
Orthomyxoviridae
Biology
medicine.disease_cause
Antibodies, Viral
Poultry
Serology
Young Adult
Risk Factors
Seroepidemiologic Studies
Internal medicine
Influenza, Human
medicine
Influenza A virus
Immunology and Allergy
Animals
Humans
Risk factor
Child
Subclinical infection
Aged
Retrospective Studies
Aged, 80 and over
Influenza A Virus, H5N1 Subtype
Transmission (medicine)
virus diseases
Infant
Environmental exposure
Environmental Exposure
Middle Aged
biology.organism_classification
Virology
Influenza A virus subtype H5N1
Infectious Diseases
Case-Control Studies
Child, Preschool
Cambodia
Subjects
Details
- ISSN :
- 00221899
- Volume :
- 199
- Issue :
- 12
- Database :
- OpenAIRE
- Journal :
- The Journal of infectious diseases
- Accession number :
- edsair.doi.dedup.....b674c144f8397e32923f059d284e8dab