Table 1.

Overview on the localization and mechanism of znuD stop mutations in meningococcal strains from different clonal lineages

Clonal lineage	No. of strains analyzed	No. of strains with znuD stop	Stop at nucleotide positions	Stop at amino acid position	Mechanism leading to znuD stop
ST-8 cc/clusterA4	27	18	76–78	26	Cytosine insertion
ST-23 cca	11	3	562–564	188	Adenine deletion
ST-939	1	1	832–834	278	Point mutation
ST-23 ccb	10	4	1663–1665	555	Point mutation

^aInvasive disease.

^bCarriage.