Quantitative microbial risk assessment for waterborne pathogens in a wastewater treatment plant and its receiving surface water body

Table 2 Beta-Poisson response model and parameters used for quantitative microbial risk assessment

Microorganism	Parameters	Dose-response model	References
Escherichia coli	β = 2.473, α = 0.395	P (inf) = 1 – (1 + N/β)-α	[16, 56]
Escherichia coli	n = 52	P(n) = 1 – (1 – Pinf) n	[16]

Key: P (inf) Probability of infection; P(n) annual probability of infection; N dosage (number of microbes ingested); n sum of exposures that occurred

ISSN: 1471-2180