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Updated: Jul 13, 2025

A Precision Medicine Tool for Measurement and Monitoring of Hemoglobin S in Sickle Cell Disease Patients Receiving Transfusion Therapy
Implementation of hospital-based sickle cell newborn screening and follow-up programs in Haiti
Ofelia A Alvarez1, Nora St Victor Dély2, Michele Paul Hanna3
1Division of Pediatric Hematology, University of Miami, Miami, FL.
Insights
Newborn screening for sickle cell disease (SCD) and follow-up programs are feasible in Haiti. Point-of-care testing significantly improved follow-up rates, despite challenges with transcranial Doppler screening.
Area of Science:
- Global Health
- Pediatrics
- Genetics
Background:
- Sickle cell disease (SCD) affects 1 in 120 children in Haiti.
- Healthcare challenges include limited newborn screening (NBS) and lack of transcranial Doppler (TCD) ultrasound for stroke risk assessment.
Purpose of the Study:
- To assess the feasibility of implementing hospital-based NBS and follow-up programs for SCD in Haiti.
- To evaluate the effectiveness of traditional NBS versus point-of-care (POC) testing in improving follow-up rates.
Main Methods:
- NBS using traditional dried blood spot testing and POC testing was implemented at four Haitian sites.
- Clinical follow-up rates for newborns identified with SCD were compared between methods.
- 165 participants with SCD were recruited for follow-up and received penicillin.
Main Results:
- SCD was identified in 0.77% of 8224 newborns screened.
- Point-of-care testing in a rural setting resulted in a 56% follow-up rate, compared to 0% without POC (P = .044).
- TCD screening faced significant implementation challenges, including poor internet and staff retention.
Conclusions:
- Implementing NBS and SCD programs in Haiti is feasible, particularly with POC testing.
- Strategies to mitigate implementation challenges, such as TCD limitations, are needed.
- Successful recruitment and treatment initiation demonstrate the potential for improved SCD care in Haiti.
Abstract:
One in 120 children are born with sickle cell disease (SCD) in Haiti. However, health care challenges include isolated newborn screening (NBS) activities and lack of transcranial Doppler (TCD) ultrasound to assess stroke risk. The implementation activities of the Comparative Study of Children in Haiti and Miami with Sickle Cell Disease involved both NBS and TCD ultrasound implementations at 4 Haitian clinical sites. We hypothesized that hospital-based newborn SCD screening and follow-up programs would be feasible at Haiti. A traditional NBS laboratory method with dried blood samples was performed at 3 Port-au-Prince sites, and the traditional method plus point-of-care (POC) testing was used at the 2 northern sites. The rate of clinical follow-up for newborns with SCD as the outcome for the NBS intervention was compared with that of the NBS method. The NBS programs identified SCD in 0.77% of 8224 newborns over a 24-month period. In the rural hospital assigned to the combination screening, 56% of newborns identified with POC testing returned for follow-up, compared with 0% when POC was not available (P = .044). Newborns who tested positive for SCD and children aged <6 years with SCD at the clinical sites were eligible for study follow-up. Accrual was successful: 165 participants (mean age, 42 months; 53% males; 93% hemoglobin SS) were recruited and received oral penicillin. TCD ultrasound screening was hampered by poor internet connections and trained staff leaving Haiti, with only 1 active site conducting screening. Despite challenges, the implementation of NBS and sickle cell programs in Haiti is feasible. We are in the process of understanding how to mitigate implementation limitations.
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