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Local evaluation of a rapid HIV assay for use in developing countries
1AIDS Prevention and Control Program, Yangon, Myanmar.
Insights
This study evaluated the Sero Strip HIV 1/2 rapid test in Myanmar, finding it highly accurate for detecting HIV. The test demonstrated excellent sensitivity and specificity in a real-world, developing country setting.
Area of Science:
- Public Health
- Infectious Diseases
- Medical Diagnostics
Background:
- Accurate and accessible HIV testing is crucial in developing countries.
- Evaluating rapid diagnostic tests in local settings is essential for effective implementation.
Purpose of the Study:
- To present a research scheme for evaluating inexpensive HIV rapid tests.
- To assess the field validity of the Sero Strip HIV 1/2 rapid test in Myanmar.
Main Methods:
- Random allocation of 200 HIV-positive and 200 HIV-negative serum specimens.
- Blind testing by laboratory technicians at four township hospitals after brief training.
- Field testing using the Sero Strip HIV 1/2 on 800 sera.
Main Results:
- The Sero Strip HIV 1/2 test achieved 100% sensitivity (correctly identifying all true positives).
- The test demonstrated 99.5% specificity (correctly identifying all but two true negatives).
- In-country scientists conducted the evaluation, ensuring local relevance.
Conclusions:
- The Sero Strip HIV 1/2 rapid test is a valid and accurate tool for HIV detection in resource-limited settings.
- The presented research scheme is effective for evaluating diagnostic tests in developing countries.
- Local scientific expertise is vital for assessing the utility of medical diagnostics in diverse environments.
Abstract:
We present a research scheme for evaluating inexpensive HIV rapid tests in a developing country setting and assess the field validity of the Sero Strip HIV 1/2 rapid test. The research design features the random allocation of 100 true HIV-positive and 100 true HIV-negative serum specimens to 4 groups, followed by blind testing for HIV status. After one short training session, laboratory technicians at 4 township hospitals (25-35 beds) located 20-50 km from Yangon, Myanmar were sent 800 sera labelled with only an identification number and divided into four groups of 200 specimens each, half being HIV-positive and half HIV-negative. Testing was done in the field with the Sero-Strip HIV 1/2. Determination of the test's validity was based on 399 true HIV positive and 401 true HIV negative sera. All true positives were correctly identified, as were all but two of the true negatives. The sensitivity (% of true positives that test positive) was 100%, and the specificity (% of true negatives that test negative) was 99.5%. The research was completed by in-country scientists who are best suited to evaluate the validity of HIV tests conducted in local environments.
