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Aeromonas species and Plesiomonas shigelloides in diarrhoea in Goa
M Verenkar1, V Naik, S Rodrigues
1Department of Microbiology, Goa Medical College, Bambolim.
Abstract:
Sixty six strains (1.9%) of Aeromonas species and 7 strains (0.2%) of Plesiomonas shigelloides were isolated from 3484 stool/rectal swabs from cases of diarrhoea during the study period of four years from August 1986 to July 1990 in Goa. Although the selective medium (Ampicillin sheep blood agar) was not used for the isolation of Aeromonas, an increase in the rate of isolation of Aeromonas from 0.2% in the year 1986 to 6.0% in 1990 was observed. Stool samples from 100 controls (patients without diarrhoea) examined in the year 1989 did not yield either of the pathogens.
Insights
Aeromonas species and Plesiomonas shigelloides were identified in diarrhea cases in Goa. Aeromonas isolation rates significantly increased over four years, suggesting a growing public health concern.
Area of Science:
- Microbiology
- Infectious Diseases
- Public Health
Background:
- Aeromonas species and Plesiomonas shigelloides are recognized as potential enteric pathogens.
- Diarrheal diseases remain a significant public health issue globally, particularly in regions with varying sanitation standards.
Purpose of the Study:
- To investigate the prevalence and isolation trends of Aeromonas species and Plesiomonas shigelloides in diarrheal cases in Goa over a four-year period.
- To assess the potential role of these bacteria as causative agents of diarrhea in the studied population.
Main Methods:
- Retrospective analysis of stool/rectal swab samples collected from diarrheal patients.
- Bacteriological isolation and identification of Aeromonas species and Plesiomonas shigelloides.
- Comparison of isolation rates over the study period and between cases and controls.
Main Results:
- Aeromonas species were isolated from 1.9% (66/3484) and Plesiomonas shigelloides from 0.2% (7/3484) of diarrheal samples.
- A notable increase in Aeromonas isolation rates was observed, rising from 0.2% in 1986 to 6.0% in 1990.
- No Aeromonas or Plesiomonas shigelloides were detected in stool samples from 100 healthy control subjects.
Conclusions:
- Aeromonas species and Plesiomonas shigelloides were identified as etiological agents in diarrheal patients in Goa.
- The observed increasing trend in Aeromonas isolation warrants further investigation and may indicate a growing public health concern.
- These findings highlight the importance of considering these pathogens in the etiological diagnosis of diarrhea.