What does world wide epidemic mean?

A worldwide epidemic, often referred to as a pandemic, is the rapid spread of a disease across multiple countries or continents, affecting a large number of people simultaneously. It typically involves Infectious Diseases that can be transmitted easily among individuals. The term highlights the global scale and impact of the outbreak, which can overwhelm healthcare systems and necessitate coordinated international responses. Examples include the COVID-19 pandemic and the H1N1 influenza outbreak.