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Multiannual patterns of influenza A transmission in Chinese live bird market systems.

Pepin KM, Wang J, Webb CT, Smith GJ, Poss M, Hudson PJ, Hong W, Zhu H, Riley S, Guan Y - Influenza Other Respir Viruses (2012)

Bottom Line: However, predicting AIV epizootics and emergence in humans is confounded by insufficient empirical data on the ecology and dynamics of AIV in poultry systems.No significant seasonality was found when all subtypes were considered together.Quantitative models of control strategies must consider multiple subtypes, hosts, and source contexts to assess the effectiveness of interventions.

View Article: PubMed Central - PubMed

Affiliation: International Institution of Infection and Immunity, Shantou University Medical College, Shantou, China Colorado State University, Fort Collins, CO, USA.

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Related in: MedlinePlus

 Temporal trends in retail markets. (A) shows the monthly proportions for all host samples positive for: APMV‐1 (gray, dotted); the most prevalent Avian influenza viruses (AIV) subtypes (H3, black; H6, light gray; H9, black dotted); and H5 (dark gray). B shows the same analysis limited to ducks (An. platyrhynchos). The horizontal line marks the upper limit in plot A for comparison. C shows monthly proportion of samples positive for subtypes H1‐H13 or APMV‐1 for the three host species (as in Table 1) that were sampled consistently throughout the 6 years (see Figure S1 for the time series of sample sizes).
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f1:  Temporal trends in retail markets. (A) shows the monthly proportions for all host samples positive for: APMV‐1 (gray, dotted); the most prevalent Avian influenza viruses (AIV) subtypes (H3, black; H6, light gray; H9, black dotted); and H5 (dark gray). B shows the same analysis limited to ducks (An. platyrhynchos). The horizontal line marks the upper limit in plot A for comparison. C shows monthly proportion of samples positive for subtypes H1‐H13 or APMV‐1 for the three host species (as in Table 1) that were sampled consistently throughout the 6 years (see Figure S1 for the time series of sample sizes).

Mentions: Prevalence varied substantially with APMV‐1 and AIV subtypes H3, H6, and H9 being the most prevalent (Figure 1A,B). Influenza subtype H6 reached as high as 20% prevalence among all poultry species, while other subtypes, including H5, rarely reached 5%. Although quail consistently showed the highest infection rates (Figure 1C), no significant differences were observed in the mean prevalence across the three most intensively sampled host species when considering all points in the time series (Figure 1C, Table 1).


Multiannual patterns of influenza A transmission in Chinese live bird market systems.

Pepin KM, Wang J, Webb CT, Smith GJ, Poss M, Hudson PJ, Hong W, Zhu H, Riley S, Guan Y - Influenza Other Respir Viruses (2012)

 Temporal trends in retail markets. (A) shows the monthly proportions for all host samples positive for: APMV‐1 (gray, dotted); the most prevalent Avian influenza viruses (AIV) subtypes (H3, black; H6, light gray; H9, black dotted); and H5 (dark gray). B shows the same analysis limited to ducks (An. platyrhynchos). The horizontal line marks the upper limit in plot A for comparison. C shows monthly proportion of samples positive for subtypes H1‐H13 or APMV‐1 for the three host species (as in Table 1) that were sampled consistently throughout the 6 years (see Figure S1 for the time series of sample sizes).
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4061500&req=5

f1:  Temporal trends in retail markets. (A) shows the monthly proportions for all host samples positive for: APMV‐1 (gray, dotted); the most prevalent Avian influenza viruses (AIV) subtypes (H3, black; H6, light gray; H9, black dotted); and H5 (dark gray). B shows the same analysis limited to ducks (An. platyrhynchos). The horizontal line marks the upper limit in plot A for comparison. C shows monthly proportion of samples positive for subtypes H1‐H13 or APMV‐1 for the three host species (as in Table 1) that were sampled consistently throughout the 6 years (see Figure S1 for the time series of sample sizes).
Mentions: Prevalence varied substantially with APMV‐1 and AIV subtypes H3, H6, and H9 being the most prevalent (Figure 1A,B). Influenza subtype H6 reached as high as 20% prevalence among all poultry species, while other subtypes, including H5, rarely reached 5%. Although quail consistently showed the highest infection rates (Figure 1C), no significant differences were observed in the mean prevalence across the three most intensively sampled host species when considering all points in the time series (Figure 1C, Table 1).

Bottom Line: However, predicting AIV epizootics and emergence in humans is confounded by insufficient empirical data on the ecology and dynamics of AIV in poultry systems.No significant seasonality was found when all subtypes were considered together.Quantitative models of control strategies must consider multiple subtypes, hosts, and source contexts to assess the effectiveness of interventions.

View Article: PubMed Central - PubMed

Affiliation: International Institution of Infection and Immunity, Shantou University Medical College, Shantou, China Colorado State University, Fort Collins, CO, USA.

Show MeSH
Related in: MedlinePlus