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Hemolytic uremic syndrome epidemiology: a population-based study in King County, Washington, 1971 to 1980
Insights
The incidence of hemolytic uremic syndrome (HUS) in children under 15 in King County, Washington, averaged 1.16 cases per 100,000 annually from 1971-1980. This common childhood disease showed an increasing trend, particularly in very young children.
Area of Science:
- Pediatric Nephrology
- Epidemiology
- Public Health
Background:
- Hemolytic uremic syndrome (HUS) is a serious condition affecting children.
- Understanding the incidence and trends of HUS is crucial for public health.
- Previous data on HUS incidence in King County, Washington, were limited.
Purpose of the Study:
- To determine the incidence of childhood hemolytic uremic syndrome in King County, Washington.
- To analyze trends in HUS incidence from 1971 to the early 1980s.
- To identify demographic risk factors associated with HUS.
Main Methods:
- Retrospective, population-based study design.
- Analysis of pediatric cases of hemolytic uremic syndrome in King County.
- Inclusion of data from 1971 through the early 1980s.
Main Results:
- Average annual incidence of HUS was 1.16 cases per 100,000 children (<15 years).
- Incidence increased throughout the study period, peaking in children under 3 years.
- No demographic risk factors (e.g., income, housing) were significantly associated with HUS incidence.
Conclusions:
- Childhood hemolytic uremic syndrome is a common and endemic disease in King County.
- The incidence of HUS has been increasing in this population.
- Further research is needed to understand the rising incidence and etiology of HUS.
Abstract:
We conducted a retrospective, population-based study of the hemolytic uremic syndrome of childhood in King County, Washington. The average annual incidence of hemolytic uremic syndrome between 1971 and 1980, inclusive, was 1.16 cases per 100,000 children younger than 15 years of age and increased during the decade and into the early 1980s. The highest annual incidence was in children less than 3 years of age (3.02 per 100,000 children) and was equal in black and white children. No demographic risk factors were associated with the incidence of this disease including population density, median family income, crowding in housing units, percentage of households with public water supply, and percentage of households with public sewers. Our data suggest that this disease is common, endemic, and increasing in incidence in King County, Washington.