Table 1.

Density of C. jejuni in various sources of excrement.

Source	Density	Units	Reference
Poultry bird faeces	105 to 108	CFU g−1 of faeces	[31]
Domestic dogs	<103–106	Copies g−1 of faeces	[52]
Wastewater	1.9–3.2	Log10 100 mL−1	[64]
	<104	Copies mL−1	[61]
Sewage sludge	1 × 105	L−1	[12]
	278	MPN g−1	[59]
	8.8 (±4.1) ×104 – 3.9 (±0.9) ×105	target gene copies/g of sludge wet weight	[61]
	1.5–4.4 (mean = 2.4)	Log10 100 mL−1	[64]
	103–105	100 mL−1	[12]
Infected humans	106–108	g−1 of faeces	[65]
Cattle	<105	Copies g−1 of faeces	[66]