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It is concerned with safeguarding the health of entire populations by focusing on the prevention of diseases, improving access to healthcare services, and advocating for policies that promote health and well-being. The Wikipedia page on public health provides an overview of this field, covering its history, key concepts, and various aspects. It explores the evolution of public health from ancient civilizations to the modern era and highlights the role of individuals such as Hippocrates and John Snow in shaping this discipline. The page delves into the key concepts of public health, including population health, social determinants of health, and the ecological model, which emphasizes the interaction between individuals and their environment. It explores the importance of surveillance and epidemiology in identifying patterns of disease occurrence and enabling effective prevention and control measures. The article also covers several areas of public health practice, including health promotion and education, disease prevention through vaccination, and sanitation and environmental health. It addresses the significance of public health in emergency preparedness and response, as well as its role in addressing global health challenges. Furthermore, the page discusses the organizations and agencies involved in promoting public health, such as the World Health Organization (WHO) and the Centers for Disease Control and Prevention (CDC). It also highlights various public health campaigns and policies implemented worldwide to address specific health issues. Additionally, the page acknowledges the ethical considerations in public health, such as balancing individual rights and public health interventions, and the need for evidence-based practices and policies. Overall, the Wikipedia page on public health offers a comprehensive and informative overview of this vital field, highlighting its core principles, practices, and its impact on the well-being of populations.