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Spatiotemporal trends in the discovery of new swine infectious agents.

Fournié G, Kearsley-Fleet L, Otte J, Pfeiffer DU - Vet. Res. (2015)

Bottom Line: These new species, of which one third was zoonotic, were taxonomically diverse.They were identified throughout the study period, predominantly in the main pork producing countries, with the rate of discovery of new virus variants doubling within the last 10 years of the study period.This information then needs to inform the design of risk-based surveillance systems and strategies directly mitigating the risk associated with these factors.

View Article: PubMed Central - PubMed

Affiliation: Veterinary Epidemiology, Economics and Public Health Group, Department of Production and Population Health, Royal Veterinary College, University of London, London, UK. gfournie@rvc.ac.uk.

ABSTRACT
A literature review was conducted to assess the spatiotemporal trend and diversity of infectious agents that were newly found in pigs between 1985 and 2010. We identified 173 new variants from 91 species, of which 73 species had not been previously described in pigs. These new species, of which one third was zoonotic, were taxonomically diverse. They were identified throughout the study period, predominantly in the main pork producing countries, with the rate of discovery of new virus variants doubling within the last 10 years of the study period. Whilst infectious agent species newly detected in high-income countries were more likely to be associated with higher virulence, zoonotic agents prevailed in low- and middle-income countries. Although this trend is influenced by factors conditioning infectious agent detection - diagnostic methods, surveillance efforts, research interests -, it may suggest that different scales and types of production systems promote emergence of certain types of infectious agents. Considering the rapid transformation of the swine industry, concerted efforts are needed for improving our understanding of the factors influencing the emergence of infectious agents. This information then needs to inform the design of risk-based surveillance systems and strategies directly mitigating the risk associated with these factors.

No MeSH data available.


Related in: MedlinePlus

Temporal trend in the identification of new infectious agent variants and species. The number of newly discovered variants (A) and species (B) is shown for each year of the study period.
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Fig2: Temporal trend in the identification of new infectious agent variants and species. The number of newly discovered variants (A) and species (B) is shown for each year of the study period.

Mentions: Figure 2 shows the number of infectious agent variants and species newly found to infect domestic swine as a function of time. Novel variants and species were identified at an average annual rate of 6.7 (range: 2–15) and 2.8 (0–7) over the study period, respectively.Figure 2


Spatiotemporal trends in the discovery of new swine infectious agents.

Fournié G, Kearsley-Fleet L, Otte J, Pfeiffer DU - Vet. Res. (2015)

Temporal trend in the identification of new infectious agent variants and species. The number of newly discovered variants (A) and species (B) is shown for each year of the study period.
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4584486&req=5

Fig2: Temporal trend in the identification of new infectious agent variants and species. The number of newly discovered variants (A) and species (B) is shown for each year of the study period.
Mentions: Figure 2 shows the number of infectious agent variants and species newly found to infect domestic swine as a function of time. Novel variants and species were identified at an average annual rate of 6.7 (range: 2–15) and 2.8 (0–7) over the study period, respectively.Figure 2

Bottom Line: These new species, of which one third was zoonotic, were taxonomically diverse.They were identified throughout the study period, predominantly in the main pork producing countries, with the rate of discovery of new virus variants doubling within the last 10 years of the study period.This information then needs to inform the design of risk-based surveillance systems and strategies directly mitigating the risk associated with these factors.

View Article: PubMed Central - PubMed

Affiliation: Veterinary Epidemiology, Economics and Public Health Group, Department of Production and Population Health, Royal Veterinary College, University of London, London, UK. gfournie@rvc.ac.uk.

ABSTRACT
A literature review was conducted to assess the spatiotemporal trend and diversity of infectious agents that were newly found in pigs between 1985 and 2010. We identified 173 new variants from 91 species, of which 73 species had not been previously described in pigs. These new species, of which one third was zoonotic, were taxonomically diverse. They were identified throughout the study period, predominantly in the main pork producing countries, with the rate of discovery of new virus variants doubling within the last 10 years of the study period. Whilst infectious agent species newly detected in high-income countries were more likely to be associated with higher virulence, zoonotic agents prevailed in low- and middle-income countries. Although this trend is influenced by factors conditioning infectious agent detection - diagnostic methods, surveillance efforts, research interests -, it may suggest that different scales and types of production systems promote emergence of certain types of infectious agents. Considering the rapid transformation of the swine industry, concerted efforts are needed for improving our understanding of the factors influencing the emergence of infectious agents. This information then needs to inform the design of risk-based surveillance systems and strategies directly mitigating the risk associated with these factors.

No MeSH data available.


Related in: MedlinePlus