Outbreak: Chipotle confirmed that in 2018 a bacterial illness at the Powell, Ohio, store sickened hundreds of customers., Between July and August, 1832, in New York City, yellow fever infected and killed thousands of people., defined by a sudden increase in the disease frequency, related to time, place, and observed population, Epidemic: In 1952, polio spread across the United States., defined by a disease that affects a large number of people within a community, population, or region, Pandemic: At least 75 million died across Europe during the plague (also known as the Black Death). , Cholera began in India and spread worldwide. It killed 150,000 Americans from 1830 to 1851, and still affects 3-5 million people and causes nearly 130,000 deaths each year worldwide. , COVID 19 spread rapidly during 2019 to 2020. Governments of most countries closed schools and non-essential jobs in an effort to limit the spread of the highly contagious disease., defined by a disease outbreak that spreads across countries or continents.,

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