TABLE 1.

Comparison of sensitivities and specificities of manual/LS swab to WASP/ESwab for the recovery of S. agalactiae

Method and swab type	No. with indicated test result				Total no.	Sensitivity (%)	Specificity (%)
	True positive	False positive	True negative	False negative
Direct plating
Manual/LS swab	28	0	65	4a	97	87.5	100.0
WASP/ESwab	30	0	65	2b	97	93.8	100.0
Enrichment culture
Manual/LS swab	29	0	65	3c	97	90.6	100.0
WASP/ESwab	31	0	65	1d	97	96.9	100.0

^aOne was positive by manual/LS Swab following LIM enrichment culture and was positive by WASP/ESwab on direct and enriched culture. Two remained negative by manual/LS Swab following LIM enrichment culture and were positive by WASP/ESwab on direct and enriched culture. One remained negative by manual/LS Swab following LIM enrichment culture and was positive by WASP/ESwab on direct culture only.

^bTwo were positive by both manual/LS Swab and WASP/ESwab following LIM enrichment culture.

^cThree were positive by WASP/ESwab on direct culture.

^dOne was negative by manual/LS Swab following direct and LIM enrichment culture and positive by WASP/ESwab on direct culture only.