TABLE 1.

Salmonella serovars isolated from Australian egg shell wash and egg farm environment^a

S. enterica serovarb	Source of isolate	No. of isolates from egg farms by year
		2010	2011	2012	2013
Typhimurium DT9	Egg shell wash	17	69	17	50
Infantis	Egg shell wash	27	122	9	7
Agona	Egg belt	18	85	25	4
Mbandaka	Egg belt	11	10	1	129
Johannesburg	Feces	0	3	0	0
Livingstone	Feces	2	0	0	0
Subspecies I 4,12:d:−	Feces	6	8	1	4
Chester	Feces	3	1	0	3
Zanzibar	Feces	0	5	0	0
Kiambu	Feces	7	19	0	0
Lille	Feces	3	4	0	0
Ohio	Feces	17	25	6	0
Anatum	Feces	16	46	0	13
Havana	Feces	0	26	0	0
Oranienburg	Feces	0	0	12	73
Montevideo	Feces	12	49	1	0
Orion var. 15+,34+	Dust in layer shed	10	28	0	0

^aInformation was obtained from the Salmonella Reference Laboratory, Australian Salmonella Reference Centre, SA Pathology, Adelaide, Australia (37–40).

^bSerovars used in the present study.