Related Experiment Videos
A clinical and epidemiological study of gastro-enteritis
Insights
Gastroenteritis in children shows seasonal variation, peaking in winter. While bacterial pathogens were identified, winter diarrhea was common but not fatal, unlike severe Escherichia coli infections.
Area of Science:
- Pediatrics
- Infectious Diseases
- Epidemiology
Background:
- Gastroenteritis is a common childhood illness with potential seasonal patterns.
- Understanding the epidemiology of childhood gastroenteritis is crucial for public health interventions.
Purpose of the Study:
- To investigate the seasonal variation and causative bacterial pathogens of childhood gastroenteritis.
- To analyze the clinical presentation and mortality associated with different bacterial strains.
Main Methods:
- A retrospective study of 2,903 children admitted with gastroenteritis over 13 years.
- Bacterial pathogen identification through laboratory analysis of patient samples.
- Comparison of clinical features and outcomes based on identified pathogens and season.
Main Results:
- Gastroenteritis incidence peaked in winter, with a distinct pattern of 'winter diarrhea' accounting for 37% of cases.
- Bacterial pathogens were recovered from 27% of patients; Shigella (12%), Salmonella (7%), and Escherichia coli (8%) were most common.
- A severe outbreak of E. coli 0111/B4 infection caused 4 of the 9 total deaths, highlighting its significant pathogenicity.
Conclusions:
- Childhood gastroenteritis exhibits significant seasonal variation, with winter being the peak incidence period.
- Enteropathogenic Escherichia coli strains, particularly O111/B4, pose the most severe threat, contrasting with the generally benign 'winter diarrhea'.
Abstract:
Over a 13-year period, 2,903 Asian, Coloured and White children with gastro-enteritis were admitted to the Wilkins Infectious Diseases Hospital, Salisbury. During a pilot study of 250 patients conducted over the first 2 years, a definite seasonal variation in the occurrence of gastro-enteritis, with a peak incidence in winter, was noticed, and this led to a more detailed study of 2,653 patients over the next 11 years. Bacterial pathogens were recovered from 27% of patients, strains of Shigella accounting for 12% Salmonella for 7% and Escherichia coli for 8%. A severe outbreak of E. coli infection occurred between October 1971 and December 1972, and 4 of a total of 9 deaths occurred during this period, all in children suffering from E. coli 0111/B4 infections. The bacterial recovery rate was highest in the summer (40%) and lowest in the winter (12%). Winter diarrhoea broke out over 3-month periods during each year and accounted for 37% of the cases, but none of the children who contracted it died. The clinical picture of winter diarrhoea differed from the others and the most serious illness was that caused by enteropathogenic strains of E. coli. The over-all mortality in the series was 0,27%.