Related Experiment Videos
The cohort effect and Helicobacter pylori
N Banatvala1, K Mayo, F Megraud
1Department of Epidemiology and Medical Statistics, London Hospital Medical College, United Kingdom.
The Journal of Infectious Diseases
|July 1, 1993
Summary
Helicobacter pylori (H. pylori) infection is decreasing in frequency. This study found that H. pylori seroprevalence declined significantly over 30 years, with most infections acquired during childhood.
Area of Science:
- Epidemiology
- Infectious Diseases
- Microbiology
Background:
- Helicobacter pylori (H. pylori) is a significant pathogen linked to various gastrointestinal diseases.
- Understanding trends in H. pylori seroprevalence is crucial for public health strategies.
Purpose of the Study:
- To investigate the temporal trends and cohort effects of H. pylori seroprevalence in a population over a 20-year period.
- To determine the age of predominant H. pylori acquisition.
Main Methods:
- Western blot analysis was used to screen 631 serum samples collected in 1969, 1979, and 1989.
- Statistical analysis was performed to assess seroprevalence trends and cohort effects, adjusting for age.
Main Results:
- H. pylori seroprevalence showed a significant decrease over the 20-year study period.
- A cohort effect was observed, with a 26% decrease in the odds of seropositivity per decade of birth (P = .008).
- Most H. pylori seropositivity in adults was acquired by age 15.
Conclusions:
- H. pylori infection is becoming less common in the studied population.
- Childhood acquisition remains the primary route for H. pylori infection.