TABLE 2.

Agreement between methods used for serogroup assignments

Serogroup by WGS	No. of isolates	Agreement with SASG			Agreement with RT-PCR
		No. of isolates	% of isolates	95% CI	No. of isolates	% of isolates	95% CI
A	88	88	100.0	97.6−99.7a	88	100.0	98.7−100a
B	74	74	100.0		74	100.0
C	145	144	99.3		144	99.3
W	63	63	100.0		63	100.0
X	19	19	100.0		19	100.0
Y	33	30	90.9		33	100.0
NGb	31	19	61.3	42.2−78.2	11	35.5	51.6−89.8
Total	453	436	96.5	94.3−98.0	432	95.4	93.0−97.1

^aThe 95% confidence interval (CI) for serogroups A, B, C, W, X, and Y.

^bNG, nongroupable.