Contemporary studies from South Africa and Nigeria have built on historical reports to demonstrate that the etiology and indeed case profile of acute HF (i.e. more women and younger individuals affected in the prime of their life) is different from high-income countries. As such, HF is now responsible for 7-10% of medical admissions in the region. These are entirely based on studies on acute HF and few on chronic HF. The nexus between endemic infections such as tuberculosis (TB) and HIV/AIDS and other non-communicable or non-infectious risk factors and HF in Africa is scarcely documented. This study will assess the long-term outcomes, risk factors, clinical phenotypes, and genomics of HF in Ibadan, Nigeria, estimate catastrophic healthcare cost associated with CHF and how it affects evidence-based care; understand cultural and social conceptions of HF in the city and by extension in Nigeria. Data from each subject shall be obtained using a uniform and standardized case report forms (CRF). A detailed clinical documentation on cases of HF will be undertaken. All variables will be summarized using appropriate descriptive statistics. Means and proportions will be estimated with two-tailed 95% confidence intervals. Specified patients' outcomes will also be summarized using proportions. Factors associated wit patient outcomes will be investigated using multivariable logistic regression models. Crude and adjusted Odds Ratio (OR) with 95% confidence intervals (CI) will be estimated. The primary event outcome of the study will be mortality by cause. Secondary event outcomes will include non-fatal major events (both resulting in and not resulting in admission).