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Table 2 Observed proportions of E. multilocularis abundance (number of parasites/total number of parasites retrieved) in foxes in Zurich by type of urbanization zone, seasons and fox age

From: Mathematical modelling of Echinococcus multilocularis abundance in foxes in Zurich, Switzerland

  Fox age (years)   
  < 1 1 to 2 2 to 3 > 3 Total
By Zone
 Periurban 0.51 0.02 0.01 0.04 0.58
 Border 0.15 0.05 0.01 0.01 0.22
 Urban 0.12 0.08 2e-4 0 0.20
Total 0.78 0.15 0.02 0.05 1.00a
By Season
 Spring 4e-3 1e-5 0 0.01 0.01
 Summer 0.08 2e-5 1e-5 5e-5 0.08
 Autumn 0.16 1e-3 4e-3 2e-3 0.17
 Winter 0.53 0.16 0.01 0.05 0.74
Total 0.78 0.16 0.01 0.06 1.00a
  1. aTotal number of parasites retrieved = 534,815 parasites