Table II.

Distribution of serotype 19A genotypes in Alaska by time period, 1986–2010

	Number of isolates (% in time period)
CC or STa	1986–1994	1995–2000	2001–2005	2006–2010	p-value
199	38 (95%)	17 (81%)	33 (63%)	62 (53%)	<0.001
172	0	2 (9.5%)	18 (35%)	39 (33%)	<0.001
320	0	0	0	15 (13%)	0.001
156	0	0	1 (1.9%)	2 (1.7%)
202	0	1 (4.8%)	0	0
3111	1 (2.5%)	0	0	0
2408	1 (2.5%)	0	0	0
4092	0	1 (4.8%)	0	0
Total	40	21	52	118

^aCC/ST=clonal complex or sequence type.