Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2022 Feb 4;12:794470. doi: 10.3389/fmicb.2021.794470

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2022 Toro, Salazar, Montero, Ugalde, Díaz, Cádiz, Henríquez, García, Díaz, Camponovo, Hermosilla and Ulloa.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

PMC Copyright notice

Dendrogram based on Dice coefficients of similarity for 276 Chilean Shigella sonnei strains by pulsed-field gel electrophoresis patterns. The dendrogram was constructed by UPGMA (GelCompar II). Shown are two pulsegroups (A,B) with a similarity of 69.1%. Twenty-two pulsetypes were defined with a similarity of >93.5%. Within pulsegroup A, all the strains belong to periods A and B, and most of them harbored dfrA8 as TMP resistance marker. Pulsegroup B comprises 214 strains divided in three clusters. Within cluster 1, there are 144 SRL and SRL/dfrA14 strains. Cluster 2 contains 25 strains, of which 21 are NAL-resistant strains harboring class 2 integron. Cluster 3 is composed of 13 strains, of which 11 carry class 2 integron, but they are NAL-sensitive strains.