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Clinical evaluation of the Taiwan trachoma control programme
Bulletin of the World Health Organization
|January 1, 1971
Summary
A community-wide trachoma treatment program in Taiwan significantly reduced disease incidence and severity. While largely successful, its long-term impact in highly endemic areas requires further investigation.
Area of Science:
- Ophthalmology
- Public Health
- Epidemiology
Background:
- Trachoma posed a significant public health challenge in Taiwan.
- Previous clinical trials and surveys in 1959-1961 informed intervention strategies.
Purpose of the Study:
- To clinically evaluate the effectiveness of a community-wide trachoma treatment program implemented in Taiwan.
- To assess the long-term impact of the intervention on trachoma prevalence and severity.
Main Methods:
- A community-wide trachoma treatment program was initiated following surveys in 1960-1961.
- A follow-up clinical reexamination of a subsample was conducted in 1968-1969.
- Limited surveys were conducted in 1970, with a repeat survey planned for 1972.
Main Results:
- Trachoma is no longer a major public health problem in most areas, with significant reductions in incidence and severity.
- Healed cases and irreversible sequelae belong to the pre-treatment cohort and are not being replaced.
- In areas with very high initial endemicity, it remains uncertain if the disease incidence has fallen below self-perpetuating levels.
Conclusions:
- The trachoma control program has been highly effective in reducing the public health burden of the disease.
- Ongoing surveillance and further studies are necessary, particularly in formerly highly endemic regions, to confirm sustained disease reduction.