Emergence of ceftriaxone resistant Salmonella enterica serovar Typhi in Eastern India.
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| Abstract |
In view of widespread isolation of fluoroquinolone (FQ) resistant Salmonella enterica serovar Typhi globally, third generation cephalosporins (ceftriaxone) are used as alternative drugs for treatment of typhoid fever in recent years. But reports on emergence of third generation cephalosporin resistant S. Typhi have been documented from various countries including India posing threat in future use of this drug for typhoid treatment. Here, we report on genomic analysis of a third generation cephalosporin resistant S. Typhi strain isolated for the first time from Eastern India, Kolkata during 2019. The study strain was phenotypically resistant to ceftriaxone, ampicillin. Whole genome sequencing revealed the presence of conjugative IncX3 plasmid carrying blaSHV-12 gene on it. The study strain belongs to H58 haplotype (4.3.1.2) and ST1 type. Comparison of phylogenetic analysis of the study strain with other cephalosporin resistant S. Typhi strains across the world revealed that three strains isolated from Western part of India during 2016 were its closest neighbours. Hence close monitoring of cephalosporin resistant S. Typhi strains are of great importance to control the furure use of this antibiotic for the treatment of typhoid fever.
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| Authors | Sriparna Samajpati, Agila Kumari Pragasam, Subhranshu Mandal, Veeraraghavan Balaji, Shanta Dutta |
| Journal | Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases (Infect Genet Evol) Vol. 96 Pg. 105093 (12 2021) ISSN: 1567-7257 [Electronic] Netherlands |
| PMID | 34592414 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't) |
| Copyright | Copyright © 2021 Elsevier B.V. All rights reserved. |
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