Vibrio cholerae O47 associated with a cholera-like diarrheal outbreak concurrent with seasonal cholera in Bangladesh
ABSTRACT The Ganges delta of the Bay of Bengal is a recognized hotspot for the emergence and spread of novel variants of Vibrio cholerae. Despite being a diverse species, very little information is available concerning environmental and human-associated aspects of V. cholerae serogroups, other than...
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American Society for Microbiology
2025-04-01
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| Online Access: | https://journals.asm.org/doi/10.1128/msphere.00831-24 |
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| author | Mohammad Tarequl Islam Jarin Tasnim Rabeya Basri Mohammad Nazmus Sakib Wali Ullah Kazi Sumaita Nahar Abdus Sadique Marzia Sultana Eiji Arakawa Masatomo Morita Haruo Watanabe Yann F. Boucher Anwar Huq Rita R. Colwell Munirul Alam |
| author_facet | Mohammad Tarequl Islam Jarin Tasnim Rabeya Basri Mohammad Nazmus Sakib Wali Ullah Kazi Sumaita Nahar Abdus Sadique Marzia Sultana Eiji Arakawa Masatomo Morita Haruo Watanabe Yann F. Boucher Anwar Huq Rita R. Colwell Munirul Alam |
| author_sort | Mohammad Tarequl Islam |
| collection | DOAJ |
| description | ABSTRACT The Ganges delta of the Bay of Bengal is a recognized hotspot for the emergence and spread of novel variants of Vibrio cholerae. Despite being a diverse species, very little information is available concerning environmental and human-associated aspects of V. cholerae serogroups, other than the two major epidemic-related serogroups O1 and O139. This represents a crucial gap in understanding the spectrum of diversity, ecology, and epidemiology of the species influencing the dynamics of global cholera. In this study, we describe an emerging variant of V. cholerae displaying the antigenic property of serogroup O47, associated with a cholera-like outbreak in coastal Bangladesh where cholera has been endemic for centuries. This outbreak coincides with a rise in cases of cholera caused by V. cholerae O1, as well as frequency of isolation of serogroups O47 and O1 from the environment. The V. cholerae O47 isolates proved clonal in nature, and their genome biology revealed distinct features, with respect to multidrug resistance (MDR), serogroup-specific genes, genomic island combinations, and overall phylogenetic properties. Genome comparison confirmed the absence of canonical virulence factors of V. cholerae O1 and O139, namely, cholera toxin (CTX) and toxin-co-regulated pili (TCP), and the presence of putative virulence factors including type 3 secretion system (T3SS) and an MDR pseudo-compound transposon, carrying genes for macrolide resistance and extended spectrum beta-lactamase. Results of the study suggest that V. cholerae O47 could represent an emerging Vibrio pathogen with the potential to spread virulence and antimicrobial resistance traits impacting the management of cholera-like diseases.IMPORTANCEDespite the global insurgence of human diseases caused by Vibrios in recent years, most research focuses only on the O1 serogroup of V. cholerae, leaving a significant gap concerning the environmental and human-associated aspects of other serogroups found in nature. Although other serogroups are often found associated with sporadic diarrhea cases, in 1992–1993, a massive cholera-like diarrhea epidemic was initiated by a “non-O1” serogroup, namely, O139 that temporally displaced O1 from endemic cholera in the Bay of Bengal villages of Bangladesh and India, highlighting the potential threat they might pose. This study describes yet another emerging variant of V. cholerae, displaying the antigenic property of serogroup O47, associated with a cholera-like outbreak in a coastal locality in Bangladesh. Findings of the study offer critical insights into the genome biology of V. cholerae O47 and its potential implications for understanding their ecology and epidemiology of cholera-like diseases. |
| format | Article |
| id | doaj-art-d197659a4b744c3c8cfd0342ea3ae127 |
| institution | Kabale University |
| issn | 2379-5042 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | American Society for Microbiology |
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| series | mSphere |
| spelling | doaj-art-d197659a4b744c3c8cfd0342ea3ae1272025-08-20T03:53:23ZengAmerican Society for MicrobiologymSphere2379-50422025-04-0110410.1128/msphere.00831-24Vibrio cholerae O47 associated with a cholera-like diarrheal outbreak concurrent with seasonal cholera in BangladeshMohammad Tarequl Islam0Jarin Tasnim1Rabeya Basri2Mohammad Nazmus Sakib3Wali Ullah4Kazi Sumaita Nahar5Abdus Sadique6Marzia Sultana7Eiji Arakawa8Masatomo Morita9Haruo Watanabe10Yann F. Boucher11Anwar Huq12Rita R. Colwell13Munirul Alam14International Centre for Diarrhoeal Disease Research, Bangladesh (iccdr,b), Dhaka, BangladeshInternational Centre for Diarrhoeal Disease Research, Bangladesh (iccdr,b), Dhaka, BangladeshInternational Centre for Diarrhoeal Disease Research, Bangladesh (iccdr,b), Dhaka, BangladeshInternational Centre for Diarrhoeal Disease Research, Bangladesh (iccdr,b), Dhaka, BangladeshInternational Centre for Diarrhoeal Disease Research, Bangladesh (iccdr,b), Dhaka, BangladeshInternational Centre for Diarrhoeal Disease Research, Bangladesh (iccdr,b), Dhaka, BangladeshNSU Genome Research Institute, North South University, Dhaka, BangladeshInternational Centre for Diarrhoeal Disease Research, Bangladesh (iccdr,b), Dhaka, BangladeshDepartment of Bacteriology, National Institute of Infectious Diseases, Tokyo, JapanDepartment of Bacteriology, National Institute of Infectious Diseases, Tokyo, JapanDepartment of Bacteriology, National Institute of Infectious Diseases, Tokyo, JapanSaw Swee Hock School of Public Health, National University of Singapore, , SingaporeMaryland Pathogen Research Institute, University of Maryland, College Park, Maryland, USAMaryland Pathogen Research Institute, University of Maryland, College Park, Maryland, USAInternational Centre for Diarrhoeal Disease Research, Bangladesh (iccdr,b), Dhaka, BangladeshABSTRACT The Ganges delta of the Bay of Bengal is a recognized hotspot for the emergence and spread of novel variants of Vibrio cholerae. Despite being a diverse species, very little information is available concerning environmental and human-associated aspects of V. cholerae serogroups, other than the two major epidemic-related serogroups O1 and O139. This represents a crucial gap in understanding the spectrum of diversity, ecology, and epidemiology of the species influencing the dynamics of global cholera. In this study, we describe an emerging variant of V. cholerae displaying the antigenic property of serogroup O47, associated with a cholera-like outbreak in coastal Bangladesh where cholera has been endemic for centuries. This outbreak coincides with a rise in cases of cholera caused by V. cholerae O1, as well as frequency of isolation of serogroups O47 and O1 from the environment. The V. cholerae O47 isolates proved clonal in nature, and their genome biology revealed distinct features, with respect to multidrug resistance (MDR), serogroup-specific genes, genomic island combinations, and overall phylogenetic properties. Genome comparison confirmed the absence of canonical virulence factors of V. cholerae O1 and O139, namely, cholera toxin (CTX) and toxin-co-regulated pili (TCP), and the presence of putative virulence factors including type 3 secretion system (T3SS) and an MDR pseudo-compound transposon, carrying genes for macrolide resistance and extended spectrum beta-lactamase. Results of the study suggest that V. cholerae O47 could represent an emerging Vibrio pathogen with the potential to spread virulence and antimicrobial resistance traits impacting the management of cholera-like diseases.IMPORTANCEDespite the global insurgence of human diseases caused by Vibrios in recent years, most research focuses only on the O1 serogroup of V. cholerae, leaving a significant gap concerning the environmental and human-associated aspects of other serogroups found in nature. Although other serogroups are often found associated with sporadic diarrhea cases, in 1992–1993, a massive cholera-like diarrhea epidemic was initiated by a “non-O1” serogroup, namely, O139 that temporally displaced O1 from endemic cholera in the Bay of Bengal villages of Bangladesh and India, highlighting the potential threat they might pose. This study describes yet another emerging variant of V. cholerae, displaying the antigenic property of serogroup O47, associated with a cholera-like outbreak in a coastal locality in Bangladesh. Findings of the study offer critical insights into the genome biology of V. cholerae O47 and its potential implications for understanding their ecology and epidemiology of cholera-like diseases.https://journals.asm.org/doi/10.1128/msphere.00831-24Vibrio choleraecholeraNOVCoutbreakgenome analysisserogroup |
| spellingShingle | Mohammad Tarequl Islam Jarin Tasnim Rabeya Basri Mohammad Nazmus Sakib Wali Ullah Kazi Sumaita Nahar Abdus Sadique Marzia Sultana Eiji Arakawa Masatomo Morita Haruo Watanabe Yann F. Boucher Anwar Huq Rita R. Colwell Munirul Alam Vibrio cholerae O47 associated with a cholera-like diarrheal outbreak concurrent with seasonal cholera in Bangladesh mSphere Vibrio cholerae cholera NOVC outbreak genome analysis serogroup |
| title | Vibrio cholerae O47 associated with a cholera-like diarrheal outbreak concurrent with seasonal cholera in Bangladesh |
| title_full | Vibrio cholerae O47 associated with a cholera-like diarrheal outbreak concurrent with seasonal cholera in Bangladesh |
| title_fullStr | Vibrio cholerae O47 associated with a cholera-like diarrheal outbreak concurrent with seasonal cholera in Bangladesh |
| title_full_unstemmed | Vibrio cholerae O47 associated with a cholera-like diarrheal outbreak concurrent with seasonal cholera in Bangladesh |
| title_short | Vibrio cholerae O47 associated with a cholera-like diarrheal outbreak concurrent with seasonal cholera in Bangladesh |
| title_sort | vibrio cholerae o47 associated with a cholera like diarrheal outbreak concurrent with seasonal cholera in bangladesh |
| topic | Vibrio cholerae cholera NOVC outbreak genome analysis serogroup |
| url | https://journals.asm.org/doi/10.1128/msphere.00831-24 |
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