Munirul Alam, Nur A. Hasan, Abdus Sadique, N. A. Bhuiyan et al.
Since Vibrio cholerae O139 first appeared in 1992, both O1 El Tor and O139 have been recognized as the epidemic serogroups, although their geographic distribution, endemicity, and reservoir are not fully understood. To address this lack of information, a study of the epidemiology and ecology of V. c...
Masatomo Morita, Makoto Ohnishi, Eiji Arakawa, N. A. Bhuiyan et al.
A mismatch amplification mutation PCR assay was developed and validated for rapid detection of the biotype specific cholera toxin B subunit of V. cholerae O1. This assay will enable easy monitoring of the spread of a new emerging variant of the El Tor biotype of V. cholerae O1.
Ashrafus Safa, N. A. Bhuyian, Suraia Nusrin, M. Ansaruzzaman et al.
The Matlab variants of Vibrio cholerae O1, defined as hybrids between the classical and El Tor biotypes, were first isolated from hospitalized patients with acute secretory diarrhoea in Matlab, a rural area of Bangladesh. These variants could not be categorized as classical or El Tor biotypes by phe...
Suraia Nusrin, Gulzar Khan, N. A. Bhuiyan, M. Ansaruzzaman et al.
PCR surveillance of the rstR genes of CTX phages in Vibrio cholerae O1 and O139 showed no relationship between the incidence of disease and changes in the rstR but showed variations in their presence in O1 and O139 strains and the occurrence of multiple types in a few strains.
Ana I. Gil, Hernán Miranda, Claudio F. Lanata, Ana Prada et al.
OBJECTIVES: To determine if the Vibrio parahaemolyticus O3:K6 global pandemic clone has spread into Peru. METHODS: A collection of 100 V. parahaemolyticus strains isolated from diarrhea cases in Peru were serotyped for O:K antigens and genotyped for the presence of the species-specific toxR gene and...
Suraia Nusrin, Ana I. Gil, N. A. Bhuiyan, Ashrafus Safa et al.
A collection of environmental and clinical strains of Vibrio cholerae O1 isolated from the beginning of the Latin American epidemic of cholera in 1991 to 2003 from multiple locations in Peru were characterized and compared with V. cholerae O1 El Tor strains of the seventh pandemic from the rest of t...
Munirul Alam, Suraia Nusrin, Atiqul Islam, Nurul A. Bhuiyan et al.
Vibrio cholerae O1 biotype El Tor (ET), the cause of the current 7th pandemic, has recently been replaced in Asia and Africa by an altered ET biotype possessing cholera toxin (CTX) of the classical (CL) biotype that originally caused the first six pandemics before becoming extinct in the 1980s. Unti...
Nurul A. Bhuiyan, Suraia Nusrin, Munirul Alam, Masatomo Morita et al.
We determined the genotype of cholera toxin by amplifying and sequencing the B-subunit in a sequential collection of 90 strains of Vibrio cholerae O139 isolated over the past 13 years since its first description in 1992. Representative strains isolated during 1993-1997 harboured ctxB of El Tor type ...
Marzia Sultana, Suraia Nusrin, Nur A. Hasan, Abdus Sadique et al.
ABSTRACT Vibrio cholerae , an estuarine bacterium, is the causative agent of cholera, a severe diarrheal disease that demonstrates seasonal incidence in Bangladesh. In an extensive study of V. cholerae occurrence in a natural aquatic environment, water and plankton samples were collected biweekly be...
G. Balakrish Nair, Ashrafus Safa, N. A. Bhuiyan, Suraia Nusrin et al.
Five strains of Vibrio cholerae O1, one each from an Australian and a New Zealand tourist with gastrointestinal illness returning from an island resort in Fiji and the remaining three from water sources located in the same resort, were extensively characterized. Conventional phenotypic traits that a...
Ashrafus Safa, Nurul A. Bhuiyan, Denise Murphy, John Bates et al.
Episodes of cholera stemming from indigenous Vibrio cholerae strains in Australia are mainly associated with environmental sources. In the present study, 10 V. cholerae O1 strains of Australian origin were characterized. All of the strains were serogroup O1 and their conventional phenotypic traits c...
N. A. Bhuiyan, Suraia Nusrin, M. Ansaruzzaman, Ashraful Islam et al.
New variants of Vibrio cholerae O1 have appeared in different time-frames in various endemic regions, especially in Asia and Africa. Sixty-nine strains of V. cholerae O1 isolated in Zambia between 1996 and 2004 were investigated by various genotypic techniques to determine the lineage of virulence s...
Suraia Nusrin, Asaduzzaman Asad, Shoma Hayat, Bitali Islam et al.
Shigella can frequently transform into a superbug due to uncontrolled and rogue administration of antibiotics and the emergence of HGT of antimicrobial resistance factors. The advent of AZM resistance in Shigella has become a serious concern in the treatment of shigellosis.
Asaduzzaman Asad, Shoma Hayat, Fahmida Habib Nabila, R Begum et al.
The emergence of multidrug-resistant (MDR) Shigella strains has impaired the efficacy of first-line antimicrobials and exacerbated diarrhea-associated morbidity and mortality worldwide. We report the draft genome sequences of 11 MDR Shigella strains isolated from the stool specimens of diarrheal pat...
Asaduzzaman Asad, M.A. Nayeem, Md. Golam Mostafa, R Begum et al.
ABSTRACT Multi-drug resistance (MDR) in Shigella continues to pose a significant public health challenge, particularly in developing countries. Recent advances in genomics strengthen the surveillance of MDR-pathogens and antimicrobial resistance (AMR) mediators. However, genome-based investigations ...