Unknown

Dataset Information

0

Trends in the epidemiology of pandemic and non-pandemic strains of Vibrio parahaemolyticus isolated from diarrheal patients in Kolkata, India.


ABSTRACT: A total of 178 strains of V. parahaemolyticus isolated from 13,607 acute diarrheal patients admitted in the Infectious Diseases Hospital, Kolkata has been examined for serovar prevalence, antimicrobial susceptibility and genetic traits with reference to virulence, and clonal lineages. Clinical symptoms and stool characteristics of V. parahaemolyticus infected patients were analyzed for their specific traits. The frequency of pandemic strains was 68%, as confirmed by group-specific PCR (GS-PCR). However, the prevalence of non-pandemic strains was comparatively low (32%). Serovars O3:K6 (19.7%), O1:K25 (18.5%), O1:KUT (11.2%) were more commonly found and other serovars such as O3:KUT (6.7%), O4:K8 (6.7%), and O2:K3 (4.5%) were newly detected in this region. The virulence gene tdh was most frequently detected in GS-PCR positive strains. There was no association between strain features and stool characteristics or clinical outcomes with reference to serovar, pandemic/non-pandemic or virulence profiles. Ampicillin and streptomycin resistance was constant throughout the study period and the MIC of ampicillin among selected strains ranged from 24 to >256 µg/ml. Susceptibility of these strains to ampicillin increased several fold in the presence of carbonyl cyanide-m-chlorophenyldrazone. The newly reported ESBL encoding gene from VPA0477 was found in all the strains, including the susceptible ones for ampicillin. However, none of the strains exhibited the ?-lactamase as a phenotypic marker. In the analysis of pulsed-field gel electrophoresis (PFGE), the pandemic strains formed two different clades, with one containing the newly emerged pandemic strains in this region.

SUBMITTER: Pazhani GP 

PROVIDER: S-EPMC4006737 | biostudies-literature | 2014 May

REPOSITORIES: biostudies-literature

altmetric image

Publications

Trends in the epidemiology of pandemic and non-pandemic strains of Vibrio parahaemolyticus isolated from diarrheal patients in Kolkata, India.

Pazhani Gururaja P GP   Bhowmik Sushanta K SK   Ghosh Santanu S   Guin Sucharita S   Dutta Sanjucta S   Rajendran Krishnan K   Saha Dhira Rani DR   Nandy Ranjan K RK   Bhattacharya Mihir K MK   Mukhopadhyay Asish K AK   Ramamurthy Thandavarayan T  

PLoS neglected tropical diseases 20140501 5


A total of 178 strains of V. parahaemolyticus isolated from 13,607 acute diarrheal patients admitted in the Infectious Diseases Hospital, Kolkata has been examined for serovar prevalence, antimicrobial susceptibility and genetic traits with reference to virulence, and clonal lineages. Clinical symptoms and stool characteristics of V. parahaemolyticus infected patients were analyzed for their specific traits. The frequency of pandemic strains was 68%, as confirmed by group-specific PCR (GS-PCR).  ...[more]

Similar Datasets

| S-EPMC2668327 | biostudies-literature
| S-EPMC516302 | biostudies-literature
| S-EPMC4370738 | biostudies-literature
| S-EPMC9663449 | biostudies-literature
| S-EPMC5435814 | biostudies-other
| S-EPMC8417801 | biostudies-literature
| S-EPMC3559161 | biostudies-literature
| S-EPMC86752 | biostudies-literature
| S-EPMC1489780 | biostudies-literature
| S-EPMC5038395 | biostudies-literature