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[Two-step tuberculin skin test in nurse students]
T Tashiro1, H Urata, K Yanagihara
1Department of Nursing, School of Allied Medical Sciences, Nagasaki University, Japan.
Kekkaku : [Tuberculosis]
|September 18, 2001
Summary
The two-step tuberculin skin test (TST) effectively identifies baseline reactivity and distinguishes new tuberculosis infections from the booster phenomenon in nurse students. This method is crucial for accurate tuberculosis screening.
Area of Science:
- Infectious Diseases
- Immunology
- Public Health
Context:
- Tuberculosis screening is essential in healthcare settings.
- Nurse students require accurate tuberculosis testing for occupational health.
- The booster phenomenon can complicate initial tuberculin skin test (TST) interpretations.
Purpose:
- To evaluate the effectiveness of a two-step tuberculin skin test (TST) protocol.
- To assess TST reactivity changes and differentiate true conversions from booster effects.
- To establish baseline TST reactivity in a cohort of nurse students.
Summary:
- A two-step TST was administered to 243 nurse students, with a second test for 240 non-blistering/necrotic reactors.
- Significant increases in erythema size were observed, with a decrease in negative reactors and an increase in strong reactors.
- The study differentiated between recent TST results and those from 14 months prior, correlating with booster phenomenon effects.
Impact:
- The two-step TST is vital for determining baseline reactivity and distinguishing new tuberculosis infections from booster phenomenon.
- Accurate TST interpretation prevents unnecessary treatment and ensures timely intervention for active tuberculosis.
- Findings support the implementation of two-step TST protocols in occupational health screening programs for healthcare students.