Table 1. Summary of TUBEX TP performance in detecting S. Typhi and S. Paratyphi A organisms from routine blood culture broth.

		Day 3 broth+		Day 5 broth
Organism isolated	Total no. cases	No. (%) found	TUBEX results*	No. (%) found	TUBEX results*
(a) S. Typhi	18	15 (83.3)	Positive (6–10)	3 (16.7)	Positive (8)
(b) S. Paratyphi A	10	4 (40.0)	Positive (4–10)	6 (60.0)	Positive (8)
(a)–(b)	28	19 (67.9)	Positive	9 (32.1)	Positive
(c) E. coli	12	8 (66.7)	Negative (0)	4 (33.3)	Negative (0)
(d) Alcaligenes spp.	1	1 (100)	Negative (0)
(e) Enterobacter spp.	1	1 (100)	Negative (0)
(c)–(e)	14	10 (71.4)	Negative	4 (28.6)	Negative
(f) None (no growth)	36			36 (100)	Negative (0)

⁺After 2 days’ culture.

^*Numericals indicate range of TUBEX scores.