TABLE 3.

Percentage of recovery of bacteriophages of B. fragilis from feces of various animal species using different host strains, F-specific phages, and levels of fecal coliforms

Host strain	% Positive samples from:
	Pigs (n = 13)	Poultry (n = 14)	Cows (n = 11)	Sheep and horses (n = 7)	Humans (n = 43)
B. fragilis HSP40	0	0	0	0	10–13a
B. fragilis RYC4023	0	0	0	0	NDc
B. fragilis RYC3234	31	0	9	0	NDc
B. fragilis RYC2056	31	29	0	0	28
B. fragilis RYC3317	54	29	18	0	NDc
B. fragilis RYC3318	46	14	0	14	NDc
E. coli HS(pFamp)Rb	46	50	9	29	NDc
Fecal coliforms	100	100	100	100	NDc

^aData obtained from references 15 and 34. 

^bHost strain for F-specific phages. 

^cND, not done.