Dementia in Africa: Current evidence, knowledge gaps, and future directions.

In tandem with the ever-increasing aging population in low and middle-income countries, the burden of dementia is rising on the African continent. Dementia prevalence varies from 2.3% to 20.0% and incidence rates are 13.3 per 1000 person-years with increasing mortality in parts of rapidly transforming Africa. Differences in nutrition, cardiovascular factors, comorbidities, infections, mortality, and detection likely contribute to lower incidence. Alzheimer's disease, vascular dementia, and human immunodeficiency virus/acquired immunodeficiency syndrome-associated neurocognitive disorders are the most common dementia subtypes. Comprehensive longitudinal studies with robust methodology and regional coverage would provide more reliable information. The apolipoprotein E (APOE) ε4 allele is most studied but has shown differential effects within African ancestry compared to Caucasian. More candidate gene and genome-wide association studies are needed to relate to dementia phenotypes. Validated culture-sensitive cognitive tools not influenced by education and language differences are critically needed for implementation across multidisciplinary groupings such as the proposed African Dementia Consortium.

Profile and outcomes of hospitalized patients with COVID-19 at a tertiary institution hospital in Ghana.

BACKGROUND: In high-income countries, mortality related to hospitalized patients with the Coronavirus disease 2019 (COVID-19) is approximately 4-5%. However, data on COVID-19 admissions from sub-Saharan Africa are scanty. OBJECTIVE: To describe the clinical profile and determinants of outcomes of patients with confirmed COVID-19 admitted at a hospital in Ghana. METHODS: A prospective study involving 25 patients with real time polymerase chain reaction confirmed COVID-19 admitted to the treatment centre of the University Hospital, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana from 1st June to 27th July, 2020. They were managed and followed up for outcomes. Data were analysed descriptively, and predictors of mortality assessed using a multivariate logistic regression modelling. RESULTS: The mean age of the patients was 59.3 ± 20.6 years, and 14 (56%) were males. The main symptoms at presentation were breathlessness (68%) followed by fever (56%). The cases were categorized as mild (6), moderate (6), severe (10) and critical (3). Hypertension was the commonest comorbidity present in 72% of patients. Medications used in patient management included dexamethasone (68%), azithromycin (96%), and hydroxychloroquine (4%). Five of 25 cases died (Case fatality ratio 20%). Increasing age and high systolic blood pressure were associated with mortality. CONCLUSION: Case fatality in this sample of hospitalized COVID-19 patients was high. Thorough clinical assessment, severity stratification, aggressive management of underlying co-morbidities and standardized protocols incountry might improve outcomes. FUNDING: None declared.

Global Impact of COVID-19 on Stroke Care and IV Thrombolysis.

OBJECTIVE: To measure the global impact of COVID-19 pandemic on volumes of IV thrombolysis (IVT), IVT transfers, and stroke hospitalizations over 4 months at the height of the pandemic (March 1 to June 30, 2020) compared with 2 control 4-month periods. METHODS: We conducted a cross-sectional, observational, retrospective study across 6 continents, 70 countries, and 457 stroke centers. Diagnoses were identified by their ICD-10 codes or classifications in stroke databases. RESULTS: There were 91,373 stroke admissions in the 4 months immediately before compared to 80,894 admissions during the pandemic months, representing an 11.5% (95% confidence interval [CI] -11.7 to -11.3, p < 0.0001) decline. There were 13,334 IVT therapies in the 4 months preceding compared to 11,570 procedures during the pandemic, representing a 13.2% (95% CI -13.8 to -12.7, p < 0.0001) drop. Interfacility IVT transfers decreased from 1,337 to 1,178, or an 11.9% decrease (95% CI -13.7 to -10.3, p = 0.001). Recovery of stroke hospitalization volume (9.5%, 95% CI 9.2-9.8, p < 0.0001) was noted over the 2 later (May, June) vs the 2 earlier (March, April) pandemic months. There was a 1.48% stroke rate across 119,967 COVID-19 hospitalizations. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection was noted in 3.3% (1,722/52,026) of all stroke admissions. CONCLUSIONS: The COVID-19 pandemic was associated with a global decline in the volume of stroke hospitalizations, IVT, and interfacility IVT transfers. Primary stroke centers and centers with higher COVID-19 inpatient volumes experienced steeper declines. Recovery of stroke hospitalization was noted in the later pandemic months.

COVID-19 and stroke: Experience in a Ghanaian healthcare system.

BACKGROUND: The novel coronavirus disease 19 (COVID-19) causes multi-system disease including possibly heightened stroke risk. Data from high-income countries (HIC) suggest disruptions to care delivery with reduced stroke admissions and administration of acute stroke reperfusion therapies. We are unaware of any published data on the impact of the COVID-19 pandemic on stroke admissions and outcomes in sub-Saharan Africa. PURPOSE: To compare rates of stroke admissions and case fatality between corresponding periods in 2020 and 2019, within a hospital system in Ghana, to assess the potential impact of the COVID-19 pandemic. METHODS: We compared monthly stroke admissions and mortality rates between January to June 2020 vs. January to June 2019 at the Komfo Anokye Teaching Hospital, a tertiary medical center in Ghana. Predictors of in-patient mortality were assessed using a multivariate logistic regression model. RESULTS: Stroke admissions were higher in January to June 2020 vs. January to June 2019 (431 vs. 401), an increase of +7.5% (95% CI: 5.1-10.5%). There was also a rise in recurrent stroke admissions in 2020 vs. 2019 (19.0% vs. 10.9%, p = .0026). Stroke case fatality trended higher in 2020 vs. 2019 (29.3% vs. 24.2%, p = .095) with an adjusted odds ratio of 1.22 (95% CI: 0.89-1.68). CONCLUSION: While an influence of secular trends cannot be excluded, the COVID-19 outbreak coincided with a comparatively significant rise in initial and recurrent stroke admissions at this Ghanaian tertiary hospital. Continued surveillance at this hospital, as well as assessment of this issue at other sites in Africa is warranted.