Table 1.

Fecal PCR testing results before and after antibiotic treatment for SFB

		Test results
No. of cages tested	Date tested	No. of cages positive	No. of cages negative	% of cages positive
Before treatment
214b	11 Sep 2014	105	109	49
554a	22 Sep 2014	394	160	71
After treatment
675a	30 Dec 2014	0	675	0
127c	2 Feb 2015	0	127	0
788a	12 Apr 2016	0	788	0

Fecal samples were collected from the cage bottom and their DNA tested for SFB by PCR analysis.

^aIncludes all cages in the room.

^bIncludes mouse strains originally obtained from an SFB-positive room.

^cIncludes samples acquired randomly from 18% of cages in room.