Last data update: Apr 04, 2025. (Total: 49030 publications since 2009)
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Initial real-world pilot of the MedMorph Reference Architecture: Hepatitis C surveillance and research
Michaels M , Botts NE , Hassell S , Mardon R , Pan ECR , Flanigan M , Chehab C , Liu S , Bocour A , Alexander M , Aponte A , Thompson ND . Appl Clin Inform 2025 16 (2) 234-244 OBJECTIVES: This study aimed to demonstrate real-world use of the Making Electronic Data More Available for Research and Public Health (MedMorph) Reference Architecture (RA) for automated exchange of hepatitis C-related data for public health surveillance and research using Fast Healthcare Interoperability Resources (FHIR). METHODS: Pilot participants included a public health authority (PHA), research organization (RO), clinical sites, and electronic health record (EHR) vendors. The RA was tested for hepatitis C public health surveillance and research data exchange. A mixed methods evaluation used multiple data sources to assess impact of the RA compared with usual methods. RESULTS: After implementation of the RA components, there was no burden on clinical staff to report data for public health surveillance or research purposes. Data were successfully transferred and passed from EHR to PHA and RO, which revealed the value of receiving clinical data in addition to laboratory data via electronic laboratory reporting for the PHA and limitations in the Bulk FHIR standard. CONCLUSION: Initial results indicate potential for long-term reduction of level of effort of reporting while improving the availability and completeness of clinical data for public health surveillance and research. Using a FHIR-based approach that aligns with regulatory health information technology certification requirements and existing infrastructure may reduce implementation burden. The MedMorph approach can enhance public health surveillance and research, resulting in improved data completeness and reduced reporting burden through automated data exchange using industry standards. MedMorph will continue to inform Centers for Disease Control and Prevention's Public Health Data Strategy, which provides the agency's direction for data modernization. |
Experience of integrating vitamin A supplementation into polio campaigns in the African Region
Chehab ET , Anya BM , Onyango AW , Tevi-Benissan MC , Okeibunor J , Mkanda P , Mihigo R . Vaccine 2016 34 (43) 5199-5202 INTRODUCTION: Vitamin A deficiency is a public health problem that affects children across the WHO African Region. Countries have integrated vitamin A supplementation in different child health interventions, most notably with polio campaigns. The integration of vitamin A in polio campaigns was documented as a best practice in Angola, Chad, Cote d'Ivoire, Tanzania, and Togo. There are potential risks to vitamin A supplementation associated with the polio endgame and certification in the African Region. METHODS: We reviewed the findings from the documentation of best practices assessment that was conducted by the WHO Regional Office for Africa in 2014 and 2015 in the five countries that noted integration of vitamin A with polio as a best practice. In addition, we reviewed the coverage rates for oral poliovirus vaccine and vitamin A supplementation in Angola, Chad, Cote d'Ivoire, Tanzania, and Togo in 2014 and 2015. RESULTS: Vitamin A deficiency in 2004 ranged from 35% in Togo to as high as 55% in Angola. All five countries integrated vitamin A supplementation in at least one campaign in 2013-2014 and all achieved over 80% coverage for vitamin A supplementation when it was integrated with polio. DISCUSSION: Given the progress of the polio program, and decreasing campaigns, there is a risk that fewer children will be reached each year with vitamin A supplementation. We recommend that for countries strengthen the integration of vitamin A supplementation with routine immunization services. |
Cryptococcal antigen screening and early antifungal treatment to prevent cryptococcal meningitis: a review of the literature
Kaplan JE , Vallabhaneni S , Smith RM , Chideya-Chihota S , Chehab J , Park B . J Acquir Immune Defic Syndr 2015 68 Suppl 3 S331-9 BACKGROUND: Screening individuals with AIDS for serum cryptococcal antigen (CrAg), followed by treatment of CrAg positives with antifungals, may prevent cryptococcal meningitis. This review examined data on CrAg screening and treatment in resource-limited settings. METHODS: We searched articles published during 2007-2014 on the effectiveness and cost-effectiveness of CrAg screening and treatment on the outcomes of mortality, morbidity, retention in care, quality of life, and/or prevention of ongoing HIV transmission. We rated overall quality of individual articles, summarized the body of evidence, the expected impact, and cost-effectiveness for each outcome. RESULTS: We identified 2613 articles. Eight met all inclusion criteria. Five studies addressed mortality and/or morbidity outcomes; all were observational and had small sample sizes; 3 lacked a comparison group. Ratings of study quality ranged from "medium" to "weak," and the quality of the overall body of evidence for mortality and morbidity outcomes was rated as "fair." The intervention's expected impact on mortality and morbidity was rated as "moderate." The 4 cost-effectiveness studies included in the analysis showed that CrAg screening and treatment interventions are highly cost-effective. No studies addressed retention in care, quality of life, or HIV transmission. CONCLUSIONS: Although limited, the body of evidence regarding CrAg screening and treatment suggests that the intervention may have an impact on preventing cryptococcal meningitis and death in persons with AIDS. Additional research is needed to quantify the intervention's effectiveness and identify optimal treatment dosing and implementation best practices. |
Current integration of tuberculosis (TB) and HIV services in South Africa, 2011
Chehab JC , Vilakazi-Nhlapo AK , Vranken P , Peters A , Klausner JD . PLoS One 2013 8 (3) e57791 SETTING: Public Health Facilities in South Africa. OBJECTIVE: To assess the current integration of TB and HIV services in South Africa, 2011. DESIGN: Cross-sectional study of 49 randomly selected health facilities in South Africa. Trained interviewers administered a standardized questionnaire to one staff member responsible for TB and HIV in each facility on aspects of TB/HIV policy, integration and recording and reporting. We calculated and compared descriptive statistics by province and facility type. RESULTS: Of the 49 health facilities 35 (71%) provided isoniazid preventive therapy (IPT) and 35 (71%) offered antiretroviral therapy (ART). Among assessed sites in February 2011, 2,512 patients were newly diagnosed with HIV infection, of whom 1,913 (76%) were screened for TB symptoms, and 616 of 1,332 (46%) of those screened negative for TB were initiated on IPT. Of 1,072 patients newly registered with TB in February 2011, 144 (13%) were already on ART prior to Tb clinical diagnosis, and 451 (42%) were newly diagnosed with HIV infection. Of those, 84 (19%) were initiated on ART. Primary health clinics were less likely to offer ART compared to district hospitals or community health centers (p<0.001). CONCLUSION: As of February 2011, integration of TB and HIV services is taking place in public medical facilities in South Africa. Among these services, IPT in people living with HIV and ART in TB patients are the least available. |
Survey of isoniazid preventive therapy in South Africa, 2011
Chehab JC , Vilakazi-Nhlapo K , Vranken P , Peters A , Klausner JD . Int J Tuberc Lung Dis 2012 16 (7) 903-7 SETTING: Public health facilities in South Africa. OBJECTIVE: To assess the implementation of isoniazid preventive treatment (IPT) in South Africa in 2011. DESIGN: Cross-sectional study of 50 randomly selected facilities in South Africa. Trained interviewers administered a standardised questionnaire at each facility on aspects of IPT policy, implementation and recording and reporting. We calculated and compared descriptive statistics by province and facility type. RESULTS: Of the 49 participating sites, 35 provided IPT (71%). IPT was not available in any Western Cape facility (0%), and it was available at a few Mpumalanga (40%) and Limpopo (20%) sites. In February 2011, 46% of eligible human immunodeficiency virus (HIV) infected patients at IPT-providing sites had been initiated on IPT. Implementation by facility type was 27% among community health centres. Of all facilities with integrated tuberculosis (TB) and HIV committees (TB-HIV), 85% offered IPT compared to 59% of those without TB-HIV committees (P = 0.12). Availability of the 2010 South African National IPT guidelines was statistically significantly associated with sites providing IPT (84% vs. 29%, P = 0.006). CONCLUSION: IPT implementation in South Africa began in February 2011. The availability of IPT guidelines was strongly associated with IPT uptake. More operational studies are needed to improve IPT implementation among HIV-infected patients in South Africa. |
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