Confined Animal Feeding Operations as Amplifiers of Influenza
| Autor: | Herbert W. Hethcote, Gregory C. Gray, Roberto A. Saenz |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Disease reservoir
Population Dynamics Population Biology medicine.disease_cause Models Biological Microbiology Article Virus Disease Outbreaks Birds Zoonoses Virology Influenza Human Pandemic Influenza A virus medicine Animals Humans Animal Husbandry education Disease Reservoirs education.field_of_study Transmission (medicine) food and beverages Animal Feed Occupational Diseases Vaccination Infectious Diseases Influenza Vaccines Influenza in Birds Concentrated Animal Feeding Operation Public Health Mathematics |
| Zdroj: | Vector-Borne and Zoonotic Diseases. 6:338-346 |
| ISSN: | 1557-7759 1530-3667 |
| Popis: | Influenza pandemics occur when a novel influenza strain, often of animal origin, becomes transmissible between humans. Domestic animal species such as poultry or swine in confined animal feeding operations (CAFOs) could serve as local amplifiers for such a new strain of influenza. A mathematical model is used to examine the transmission dynamics of a new influenza virus among three sequentially linked populations: the CAFO species, the CAFO workers (the bridging population), and the rest of the local human population. Using parameters based on swine data, simulations showed that when CAFO workers comprised 15-45% of the community, human influenza cases increased by 42-86%. Successful vaccination of at least 50% of CAFO workers cancelled the amplification. A human influenza epidemic due to a new virus could be locally amplified by the presence of confined animal feeding operations in the community. Thus vaccination of CAFO workers would be an effective use of a pandemic vaccine. |
| Databáze: | OpenAIRE |
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