Seasonal variation of Salmonella enterica prevalence in milk and cottage cheese along the dairy value chain in three regions of Ethiopia

Table 2 Prevalence of S. enterica in wet season at different levels in the dairy value chain in three regions

Region	Level in the Value chain	Number of Sample	Number of positive samples (%)	χ²	P-value
Oromia	Producer	24	7 (29.2)	19.3	0.002
	Collector	24	6 (25)
	Processor	24	0 (0)
	Retailer	24	0 (0)
	Farm market cottage cheese	12	0 (0)
	Farm Retailer cottage cheese	12	1 (4.2)
	Total	120	14 (11.7)
SNNP	Producer	12	1 (8.3)	4.4	0.4
	Collector	12	2 (16.7)
	Processor	12	3 (25)
	Retailer	12	3 (25)
	Farm market cottage cheese	6	0
	Farm Retailer cottage cheese	6	0
	Total	60	9 (15)
Amhara	Producer	10	2 (20)	2.2	0.8
	Collector	10	2 (20)
	Processor	10	2 (20)
	Retailer	10	1 (5)
	Farm market cottage cheese	4	0 (0)
	Farm Retailer cottage cheese	4	0 (0)
	Total	48	7 (14.6)

ISSN: 2731-9245