TABLE 2.

Pathogen isolation^a in BacT/Alert FA and BacT/Alert MB bottles^b according to the presence of antimicrobial activity in sera from patients in Sa Kaeo and Nakhon Phanom, Thailand, 2005–2012

Pathogen	Pathogen yield result for:
	ABXc,d present (n = 12,091)						ABXc,d not present (n = 34,575)
	F bottle		MB bottle		Difference in yield (MB − F)		F bottle		MB bottle		Difference in yield (MB − F)
	No.	%	No.	%	%	McNemar's P	No.	%	No.	%	%	McNemar's P
Burkholderia pseudomalleie	98	0.81	178	1.47	0.66	<0.0001	295	0.85	311	0.90	0.05	0.1131
Escherichia coli	168	1.39	163	1.35	−0.04	0.5737	1,128	3.26	1,050	3.04	−0.22	0.0002
Klebsiella pneumoniae	59	0.49	52	0.43	−0.06	0.0896	363	1.05	332	0.96	−0.09	0.0068
Salmonella speciesf	25	0.21	19	0.16	−0.05	0.0143	179	0.52	158	0.46	−0.06	0.0127
Staphylococcus aureus	31	0.26	20	0.17	−0.09	0.0076	261	0.75	245	0.71	−0.04	0.0455
Streptococcus pneumoniae	4	0.03	4	0.03	0.00	1.0000	110	0.32	75	0.22	−0.10	<0.0001
Streptococcus pyogenes	5	0.04	1	0.01	−0.03	0.1025	102	0.30	78	0.23	−0.07	0.0001
Total pathogens	390	3.2	437	3.6	0.04	0.0022	2,438	7.1	2,249	6.5	0.6	<0.0001

^aSelected subset of commonly identified pathogens.

^bBacT/Alert FA (PF for children <5 years old) and BacT/Alert MB (F and MB) bottles were used.

^cABX, antimicrobial activity.

^dABX presence was determined by antimicrobial activity in patient sera at the time of blood collection (4).

^eNumbers in this table are lower than those in Table 1, because antibiotic activity data were not available for all cases.

^fAll nontyphoidal Salmonella species.