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Table 4 The calculated values of composite parameters a and b from Model 1.1

From: Field transmission intensity of Schistosoma japonicum measured by basic reproduction ratio from modified Barbour’s model

Parameter

2003

2004

2005

2006

2007

2008

2009

2010

a

0.0085

0.0226

0.0038

0.0017

0.0044

0.0037

0.0037

0.0088

b

0.0157

0.0088

0.0224

0.1344

0.0287

0.0598

0.0341

0.0254

  1. Note: a refers the infection rate at which an infected snail makes an susceptible definitive host to be infected per unit time (1 day) and per square meter waters, b refers the rate at which an infected definitive host causes the snail population to be infected per unit time (1 day) and per square meter waters.