Modelling and Analyzing the Potential Controls for Neospora caninum Infection in Dairy Cattle Using an Epidemic Approach

Table 1

Description of parameters and variables used in the model.

Notation	Definition	Unit	Value	Reference
	Buying or selling rate of animals		–	—
	Pregnancy rate		0.30	[18, 25]
	Abortion rate of susceptible cow	Unitless	0.02	[18]
	Abortion rate of infected cow	Unitless	0.08	[18, 22]
	Horizontal infection rate		—	—
	Vertical infection rate of infected cow	Unitless	0.90	[18, 20]
	Prevalence dependent factor	Unitless	0.028	[16, 18]
	Proportion of offspring	Unitless	0.25	Estimated
	Proportion of heifers	Unitless	0.25	Estimated
	Proportion of cows	Unitless	0.50	Estimated
	Mortality rate		0.10	[18]
	Removal rate		0.095	Assumed
	Recovery rate of dams		0.60	Assumed
	External transmission coefficient		0–0.07	Assumed
	Culling proportion in test-and-cull	Unitless	0.70	Assumed
	Specificity of serological test	Unitless	0.98	[18]
	Sensitivity of serological test	Unitless	0.96	[18]
	Coverage rate of vaccination	Unitless	0.50	Assumed
	Efficacy of vaccination	Unitless	0.90	[18, 26]
	Abortion rate of vaccinated infected cow	Unitless	0.06	[18, 26]
	Vertical infection rate of vaccinated infected cow	Unitless	0.40	Assumed