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. 2011 Aug 4;2(2):115–126. doi: 10.1016/j.phrp.2011.08.003

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© 2011 Published by Elsevier B.V. on behalf of Korea Centers for Disease Control and Prevention.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Minimum spanning tree of Korean isolates by MLST profiles of antigenic determinant genes. A minimum spanning tree was constructed by sequence type profiles deriving from antigenic determinant genes. Lines-circles indicate sequence type; numbers in parentheses are the number of strains included in each sequence type. Dots-circles indicate the clonal complex confirmed by BURST analysis. Because the distance between AST4 with AST3 was too long, we omitted (asterisk). AST2 was newly appearing sequence type when the pertussis incidence was greatly increased.