Pandemics are widespread outbreaks of infectious diseases that affect a large number of people across multiple countries or continents. They can be caused by various pathogens, including viruses and bacteria, and often lead to significant health, social, and economic impacts. Notable examples include the 1918 Influenza Pandemic and the COVID-19 Pandemic. The spread of pandemics is facilitated by factors such as global travel and urbanization. Public health measures, including vaccination and quarantine, are crucial in controlling their spread. Understanding pandemics helps societies prepare for and respond to future health crises effectively.