Table 2. The genetic variation in O. tsutsugamushi MLST allele of 89 strains.

Gene	Length of allele (bp)	No. of lleles	No. of variable sites	dN/dS †
gpsA	390	24	47	0.2663
mdh	348	20	18	0.2269
nrdB	384	19	21	0
nuoF	360	25	36	0.121
ppdK	396	21	45	0.2378
sucB	411	20	19	0.2605
sucD	411	20	26	0.0517

†: d_N/d_S: The ratio of mean non-synonymous substitutions per non-synonymous site and mean synonymous substitutions per synonymous site.