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Volume 17, Number 10—October 2011
Dispatch

Global Distribution of Shigella sonnei Clones

Ingrid Filliol-Toutain, Chien-Shun ChiouComments to Author , Caterina Mammina, Peter Gerner-Smidt, Kwai-Lin Thong, Dac Cam Phung, Mariana Pichel, Reza Ranjbar, Amy Gassama Sow, Kara Cooper, Efrain Ribot, Norma Binsztein, and Shiu-Yun Liang

Author affiliations: Institut Pasteur, Paris, France (I. Filliol-Toutain); Chung Shan Medical University, Taichung, Taiwan (C.-S. Chiou); Centers for Disease Control, Taipei, Taiwan (C.-S. Chiou, S.-Y. Liang); University of Palermo, Palermo, Italy (C. Mammina); Centers for Disease Control and Prevention, Atlanta, Georgia, USA (P. Gerner-Smidt, K. Cooper, E. Ribot); University of Malaya, Kuala Lumpur, Malaysia (K.-L. Thong); National Institute of Hygiene and Epidemiology, Hanoi, Vietnam (D.C. Phung); Instituto Nacional de Enfermedades Infecciosas, Buenos Aires, Argentina (M. Pichel, N. Binsztein); Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran (R. Ranjbar); Institut Pasteur de Dakar, Dakar, Senegal (A. Gassama Sow)

Main Article

Table

Allelic diversity and range of repeats of VNTRs for 3 major Shigella sonnei clonal groups*

VNTR Repeat unit, bp No. alleles Clonal group A, n = 1,382
 Clonal group B, n = 75
 Clonal group C, n = 212
Allelic diversity† Range of repeats Allelic diversity Range of repeats Allelic diversity Range of repeats
SS1 7 16 0.71 1–16 0 1 0 1
SS2 9 3 0.02 2–3 0 2 0.04 1–3
SS3 7 30 0.88 2–29 0.90 2–34 0.82 2–28
SS4 7 3 0.01 2–6 0 2 0.10 2–3
SS5 7 3 0.08 2–4 0.03 2–3 0 3
SS6 7 29 0.85 2–31 0 2 0.86 4–30
SS7 7 3 0.49 2–3 0 2 0.02 2–3
SS8 60 3 0 1 0.10 1–2, 330‡ 0.45 1–2
SS9 6 16 0.65 2–18 0.83 5–18 0.77 2–18
SS10 6 9 0.57 2–10 0.46 3–8 0.53 0, 3–8
SS11 6 8 0.63 2–9 0.64 2–8 0.65 3–9
SS12 9 5 0.01 2–3 0.58 2–6 0.18 2–4
SS13 6 5 0.19 2–6 0.03 0, 2 0.07 2–4
SS14 9 4 0.01 2–3 0 2 0.37 2–6
SS15 6 3 0.04 2–3 0.21 3–4 0.02 2–3
SS16 17 3 0.07 1–2 0 2 0.06 1–3
SS17 6 2 0 0, 2 0.15 2–3 0.04 2–3
SS18 5 3 0.01 2–3 0 2 0.30 2–4
SS19 5 2 0.03 2–3 0.23 2–3 0.03 2–3
SS20 40 2 0.04 1–2 0 1 0 1
SS21 18 3 0.01 0, 1–2 0.12 1–2 0.24 1–4
SS22 11 2 0.01 1–2 0.03 1–2 0 1
SS23 16 8 0.03 0, 2–6 0.55 0, 2–5 0.69 0, 2–10
SS24 168 2 0.06 0, 1–2 0.03 0, 1 0.05 1–2
SS25 135 2 0.01 1–2 0.03 1–2 0.41 1–2
SS26 101 5 0.01 2–5 0.03 1–5 0 4

*VNTR, variable number tandem repeat.
†Simpson's diversity index = 1 – Σ(n/N)2.
‡Allele 330 for SS8, which has an imperfect repeat, is designated by the size of amplicon instead of the number of repeats.

*VNTR, variable number tandem repeat.
†Simpson's diversity index = 1 – Σ(n/N)2.
‡Allele 330 for SS8, which has an imperfect repeat, is designated by the size of amplicon instead of the number of repeats.

Main Article

Page created: September 23, 2011
Page updated: October 03, 2011
Page reviewed: October 03, 2011
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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