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Published on: October 31, 2010
Turnaround time for early infant HIV diagnosis in rural Zambia: a chart review
Catherine G Sutcliffe1, Janneke H van Dijk2, Francis Hamangaba3
1Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, United States of America.
Insights
Early infant HIV diagnosis in rural Zambia faces significant delays, with a 92-day median turnaround time from sample collection to caregiver notification. Improving result communication is crucial for timely antiretroviral therapy initiation in infants.
Area of Science:
- Public Health
- Infectious Diseases
- Pediatrics
Background:
- Early infant diagnosis of HIV is critical for timely treatment initiation.
- Sub-Saharan Africa, particularly rural areas, faces challenges in infant HIV diagnosis due to limited laboratory capacity and specimen transport delays.
- This study investigated turnaround times for early infant HIV diagnosis in rural Zambia.
Purpose of the Study:
- To measure the turnaround time for confirmation of HIV infection in infants in rural Zambia.
- To identify specific points of delay in the early infant HIV diagnosis process.
- To inform strategies for improving the efficiency of HIV diagnosis and care for infants.
Main Methods:
- Chart reviews were conducted for children undergoing early infant HIV diagnosis at Macha Hospital, Zambia, between 2010 and 2012.
- Data abstracted included dates related to Prevention of Mother-to-Child Transmission (PMTCT) drug receipt and HIV test results.
- Turnaround times were calculated for various stages of the diagnostic process.
Main Results:
- A total of 476 samples from 403 infants were analyzed.
- The median time from sample collection to return of results to the caregiver was 92 days.
- Significant delays were observed in result transmission from the central laboratory to the clinic (29 days) and from the clinic to the caregiver (45 days).
- 12% of samples tested positive for HIV, with a trend towards shorter turnaround times for positive results.
Conclusions:
- Substantial delays exist in the early infant HIV diagnosis process in rural Zambia, primarily in result communication.
- Inefficiencies in laboratory result processing and dissemination hinder timely diagnosis and treatment initiation.
- Streamlining the turnaround time for HIV test results is essential to improve health outcomes for HIV-infected infants.
Background:
Early infant HIV diagnosis is challenging in sub-Saharan Africa, particularly in rural areas where laboratory capacity is limited. Specimens must be transported to central laboratories for testing, leading to delays in diagnosis and initiation of antiretroviral therapy. This study was undertaken in rural Zambia to measure the turnaround time for confirmation of HIV infection and identify delays in diagnosis.
Methods:
Chart reviews were conducted from 2010-2012 for children undergoing early infant HIV diagnosis at Macha Hospital in Zambia. Relevant dates, receipt of drugs by mother and child for the prevention of mother-to-child transmission (PMTCT), and test results were abstracted.
Results:
403 infants provided 476 samples for early infant diagnosis. The median age at the "6-week" and "6-month" assessments was 8.1 weeks and 7.0 months, respectively. The majority of mothers (80%) and infants (67%) received PMTCT. The median time between sample collection and arrival at the central laboratory in Lusaka was 17 days (IQR: 10, 28); arrival at the central laboratory to testing was 6 days (IQR: 5, 11); testing to return of results to the clinic was 29 days (IQR: 17, 36); arrival of results at the clinic to return of results to the caregiver was 45 days (IQR: 24, 79). The total median time from sample collection to return of results to the caregiver was 92 days (IQR: 84, 145). The proportion of HIV PCR positive samples was 12%. The total median turnaround time was shorter for HIV PCR positive as compared to negative or invalid samples (85 vs. 92 days; p = 0.08).
Conclusions:
Delays in processing and communicating test results were identified, particularly in returning results from the central laboratory to the clinic and from the clinic to the caregiver. A more efficient process is needed so that caregivers can be provided test results more rapidly, potentially resulting in earlier treatment initiation and better outcomes for HIV-infected infants.
