Table 2.

Risk factors and isolation frequency of thermophilic campylobacters in chickens in Morogoro

Risk factor	Group	Number of children/chickens	Number of cases	Isolation frequency (%)	P-value	Remarks
Chicken types	Broilers	156	78	50.0	p = 0.000	S
	Cockerels	23	12	52.2
	Indigenous	64	48	75.0
	Layers	176	40	22.7
Flock size	Small	199	75	37.7	P = 0.007	S
	Medium	19	0	0.0
	Large	201	103	51.2
Keeping other animals concurrently	Kept	242	76	31.4	P = 0.000	S
	Not kept	177	102	57.6
Agea (weeks)	0–4	11	3	27.3	P = 0.179	NS
	5–9	48	7	14.6
	10–14	28	6	21.4
	15–19	93	62	66.7
	20+	190	56	29.5
Thermophilic Campylobacter isolates	C. jejuni	178	155	87.1	p = 0.000	S
	C. coli	178	23	12.9
	C. lari	178	0	0.0
	Overall	419	178	42.5

S = statistically significant (p < 0.05) while NS = statistically not significant (p > 0.05)

^a49 indigenous chickens were excluded as their age could not be ascertained due to lack of proper records