What are some types of healthcare systems in the world?

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Healthcare systems vary in how they are funded and how universal coverage is achieved. Some countries finance care through the government with tax funds and provide most services at little or no direct cost to patients (a government-funded, single-payer model). Others guarantee universal access through a government-operated insurance program that everyone is enrolled in, while care is delivered by private or mixed providers (universal public insurance). Others combine public and private insurance to cover everyone, with both sectors contributing and competing under a universal coverage goal (universal public-private insurance). Some places rely primarily on private health insurance for everyone, with regulation to ensure access, while others do not guarantee coverage for all, leaving portions of the population uninsured or underinsured (non-universal insurance). No single approach fits all contexts, and many countries use combinations of these arrangements. This breadth is why listing all five types provides the most complete view of how health systems can be organized globally.