Background As the World Health Organization (WHO) and its joint partners such as USAIDS target achieving 90% sustained virological suppression among children and adolescents living with Human Immunodeficience Virus (HIV)/AIDS, it is imperative to elucidate the current prevalence and factors associated with virological treatment failure for formulation of appropriate strategies. This study was conducted determine the prevalence and factors associated with virological treatment failure among children and adolescents with HIV/AIDS on antiretroviral therapy (ART) attending HIV/AIDS care clinics in Dodoma, Central Tanzania. Methods This was a cross-sectional study of children aged 1–19 years attending 3 HIV/AIDS care clinics in Dodoma (central Tanzania) from November 2018 to February 2019. Sociodemographic and clinical factors were documented, HIV viral load and CD4+ T lymphocytes were evaluated for children on ART for ≥6 months. The primary outcomes were the prevalence and factors associated with viralogic treatment failure. Results Of 300 children enrolled, 102 (34%) had virological treatment failure. Poor adherence to ART (adjusted odds ratio [AOR] = 3.221; 95% confidence interval [CI], 1.867–5.558; P = .032), nevirapine regimen (AOR = 3.185; 95% CI, 1.473–6.886; P ≤ .001), not using cotrimoxazole prophylaxis (AOR = 25.56; 95% CI, 3.15–27.55; P = .002) and nondisclosure of HIV status to others (AOR = 7.741; 95% CI, 2.351–25.489; P = .001) were independently associated with virological treatment failure. Conclusions Current prevalence of virological treatment failure among children and adolescents living with HIV on ART remain high. Factors such as ART adherence, nevirapine based regimen, HIV status disclosure to those caring for the child need to be addressed to achieve sustained virological suppression.

Purpose: In sub-Saharan Africa, cancer treatment facilities are often scarce and centered in urban areas, which means many patients must travel long distances to reach cancer care. Still, little is known about how this distribution of cancer centers impacts patients' ability to access care. Methods: Records of all pediatric patients (<18yo) treated for cancer in Tanzania in 2019 through the Tanzanian Pediatric Cancer Network were reviewed. This network represents all 9 hospitals currently treating children with cancer in Tanzania. Demographic and diagnostic information was recorded. ArcGIS was used to estimate patients' travel times from home addresses to cancer care. AccessMod was used to calculate 4-hour access for the population. Results: In 2019, a total of 821 pediatric patients were diagnosed with cancer with an incidence of 1.42/100,000 population. The most common diagnoses were Wilms tumor (17.2%, n=134), retinoblastoma (16.8%, n=131), and acute lymphoblastic leukemia (15.9%, n=124). There was regional variation by diagnosis, with the Lake Zone having the highest incidence of Burkitt lymphoma (0.29; average 0.15) and retinoblastoma (0.5; average 0.33). Reported regional incidence inversely correlated to distance to cancer treatment facility. Median travel time to cancer care for patients was 4.55 hours. Currently 74.5% of the population lives within 4 hours of existing cancer care facilities, and it would require adding cancer care capacity to 8 additional facilities to reach 95% coverage. Conclusions: This is the first comprehensive evaluation of the incidence of presenting pediatric cancer patients in Tanzania. Only 18.8% of the estimated pediatric patients with cancer in Tanzania were treated in 2019. The reported incidence was lower in areas further away from treatment centers, suggesting the importance of increased access to cancer care facilities as part of a future national scale-up strategy. Citation Format: Luke Maillie, Alice Mutagonda, Lulu Chirande, Laiti Rehema, Shakilu Jumanne, Elton Meleki, Furaha Serventi, Julius Alloyce, Franco Afyusisye, Sebastian Sanchez, Matthew Sisk, Marie Jose Voeten, Ester Kawira, Heronima Joas, Trish Scanlan, Kristin Schroeder. The Tanzanian Pediatric Cancer Network: A Comprehensive Evaluation of the Incidence of Presenting Patients and Access to Pediatric Cancer Care in Tanzania [abstract]. In: Proceedings of the 9th Annual Symposium on Global Cancer Research; Global Cancer Research and Control: Looking Back and Charting a Path Forward; 2021 Mar 10-11. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2021;30(7 Suppl):Abstract nr 101.

Background Little is known on how the interaction between Sickle Cell Disease (SCD) and renal insults caused by other coexisting conditions in Sub Saharan Africa such as urinary schistosomiasis, malnutrition and HIV affect the prevalence of renal dysfunction in children with SCD. Objectives To determine the prevalence and factors associated with renal dysfunction among children with SCD aged 6 months to 12 years attended at a tertiary hospital in Northwestern Tanzania. Methods A cross sectional hospital-based study with a short follow up component of 3 months for 153 children with SCD was done to document demographics, clinical characteristics and features of renal dysfunction including urine dipstick albuminuria (>20mg/l) and eGFR (<60ml/ml/min/1.73m 2 ). Other potential renal insults such as HIV infection and Schistosomiasis were also evaluated. Results At enrollment, 48/153(31.37%) children had renal dysfunction declining to 31(20.3%) at 3 months follow up. Acute chest syndrome (OR 3.04, 95% CI [1.08–8.96], p = 0.044), severe anemia (OR 0.44, 95% CI [0.26–0.76],p = 0.003), urinary schistosomiasis (OR 7.43, 95% CI [2.10–26.32] p<0.002) and acute malnutrition (OR 4.92, 95% CI [1.29–18.84], p = 0.020). were associated with renal dysfunction. Conclusion Where prevalent, urinary schistosomiasis and acute malnutrition increase the risk for renal dysfunction in children with SCD. We recommend albuminuria routine screening in children with SCD especially those presenting with acute chest syndrome, severe anemia and features of acute malnutrition for early detection of renal dysfunction among children with SCD.

Children with febrile encephalopathy are more likely to have malaria than ABM if they have severe anemia.