Single-nucleotide polymorphism typing analysis for molecular subtyping of Salmonella Tennessee isolates associated with the 2007 nationwide peanut butter outbreak in the United States

Table 1 Information of strains used in this study

Source	Site of isolation	Location	Outbreak_range^a	Outbreak_PFGE^b	Outbreak association^c
Human (114)^d	Stool (60)	IN (7), MI (17), MN (34), NY (19), TN (37)	Yes (81)	Yes (67)	Yes (64)
	Urine (32)		No (32)	No (7)	Suspected (20)
	Wound (2)		Unknown (1)	Unknown (40)	No (30)
	Unknown (20)
Food (17)	Peanut butter (7)	MN (13), TN (2), UC (2)	Yes (13)	Yes (9)	Yes (7)
	Dried powdered eggs (6)		No (2)	Unknown (8)	Suspected (8)
	Ground beef (1)		Unknown (2)		No (2)
	Fish meal (1)
	Unknown (2)
Environment (8)	Feed (1)	MN (2), UP (6)	Yes (2)	No (2)	No (8)
			Unknown (6)	Unknown (6)
	Unknown (7)
Animal (37)	Avian (24); chicken, chukar, pheasant, turkey, etc.	NVSL (23), UP (14)	Unknown (37)	Unknown (37)	No (37)
	Ruminant (10); alpaca, cattle, deer, goat
	Swine (3)

IN Indiana, MN Minnesota, MI Michigan, NVSL National Veterinary Service Laboratory, NY New York, TN Tennessee, UC Salmonella genetic stock center at the University of Calgary, UP Salmonella reference center at the University of Pennsylvania
^aOutbreak_range: yes, illness onset or isolation of S. Tennessee during 2006.08.01 to 2007.07.31; no, illness onset or isolation of S. Tennessee before 2006.08.01 or after 2007.07.31; unknown, no information on illness onset or isolation date
^bOutbreak_PFGE: yes, PFGE profiles of JNXX01.0010, JNXX01.0011, or JNXX01.0026; no, PFGE profiles other than JNXX01.0010, JNXX01.0011, or JNXX01.0026; unknown, no PFGE profile data
^cOutbreak association: yes, both yes for outbreak range and PFGE; suspected, yes for either outbreak range or PFGE; no, both no and/or unknown for outbreak range and PFGE
^dNumbers in parentheses indicate the number of isolates

ISSN: 1757-4749