TABLE 3.

Annual distribution of PorA group B meningococci, 1994 to 1999

Yr	Serosubtype	No. of cases	%		Yr	Serosubtype	No. of cases	%
1994	P1.7	11	16.2
	P1.4	10	14.7
	P1.10	8	11.8
	P1.15	6	8.8
	P1.14	4	5.9
	P1.16	4	5.9
	P1.2	3	4.4
	P1.9	3	4.4
	P1.1,7	2	2.9
	P1.2,5	2	2.9
	TYa	53	77.9
	NTb	15	22.1
	Allc	68	100
1995	P1.4	10	16.6
	P1.16	7	11.7
	P1.9	6	10
	P1.15	5	8.3
	P1.7	5	8.3
	P1.10	3	5
	P1.2	3	5
	P1.14	2	3.3
	P1.3	1	1.7
	P1.6	1	1.7
	P1.13	1	1.7
	TY	44	73.3
	NT	16	26.7
	All	60	100
1996	P1.4	19	26
	P1.15	7	9.6
	P1.14	4	5.5
	P1.9	3	4.1
	P1.10	3	4.1
	P1.3	2	2.7
	P1.16	2	2.7
	P1.2,5	2	2.7
	P1.12	1	1.4
	P1.13	1	1.4
	P1.5	1	1.4
	P1.6	1	1.4
	TY	46	63
	NT	27	37
	All	73	100
1997	P1.4	8	13.6
	P1.15	6	10.2
	P1.5	4	6.8
	P1.14	4	6.8
	P1.7	3	5.1
	P1.9	2	3.4
	P1.16	2	3.4
	P1.2	1	1.7
	P1.3	1	1.7
	P1.10	1	1.7
	P1.12	1	1.7
	P1.19	1	1.7
	TY	34	57.6
	NT	25	42.4
	All	59	100
1998	P1.4	13	24.1
	P1.9	5	9.3
	P1.15	5	9.3
	P1.16	4	7.4
	P1.5	3	5.6
	P1.14	3	5.6
	P1.1	1	1.9
	P1.3	1	1.9
	TY	35	64.8
	NT	19	35.2
	All	54	100
1999	P1.4	12	14
	P1.9	9	10.5
	P1.15	9	10.5
	P1.14	8	9.3
	P1.3	4	4.7
	P1.5	3	3.5
	P1.12	1	1.2
	P1.13	1	1.2
	P1.16	1	1.2
	P1.7,16	1	1.2
	TY	49	57
	NT	37	43
	All	86	100
1994 to 1999	P1.4	72	18
	P1.15	38	9.5
	P1.9	28	7
	P1.14	25	6.3
	P1.7	20	5
	P1.16	20	5
	P1.10	15	3.8
	P1.5	11	2.8
	P1.2	11	2.8
	P1.3	9	2.3
	P1.1,7	3	0.7
	P1.13	3	0.7
	P1.12	3	0.7
	P1.6	2	0.5
	P1.19	1	0.3
	TY	261	65.3
	NT	139	34.7
	All	400	100

^aTY, total serotypeable isolates.

^bNT, nonserotypeable isolates.

^cAll serotypeable and nonserotypeable isolates.