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The Confederation period was the era of the United States' history in the 1780s after the American Revolution and prior to the ratification of the United States Constitution. In 1781, the United States ratified the Articles of Confederation and Perpetual Union and prevailed in the Battle of Yorktown , the last major land battle between British ...
An epidemic is the rapid spread of disease to a large number of people in a given population within a short period of time; in meningococcal infections, an attack rate in excess of 15 cases per 100,000 people for two consecutive weeks is considered an epidemic. [1]
The first confirmed human case in the United States was on 19 January 2020. The World Health Organization declared the COVID-19 outbreak a Public Health Emergency of International Concern (PHEIC) on 30 January 2020, and first referred to it as a pandemic on 11 March 2020. [3] [4] The WHO ended the PHEIC on 5 May 2023. [5]
This is a timeline of influenza, briefly describing major events such as outbreaks, epidemics, pandemics, discoveries and developments of vaccines.In addition to specific year/period-related events, there is the seasonal flu that kills between 250,000 and 500,000 people every year and has claimed between 340 million and 1 billion human lives throughout history.
Timeline of the COVID-19 pandemic in the United States (2023) Index of articles associated with the same name This set index article includes a list of related items that share the same name (or similar names).
The first national census was taken in 1790, shortly after the end of the Confederation period. It found that the United States had a population of 3,929,214 residents with an average of 4.5 people per square mile.
Confederation period (1781-1789) Federalist Era ... Map of North America at the start of Queen Anne's War ... History of time in the United States;
The COVID-19 pandemic ranks as the deadliest disaster in the country's history. [43] It was the third-leading cause of death in the U.S. in 2020, behind heart disease and cancer. [44] From 2019 to 2020, U.S. life expectancy dropped by three years for Hispanic and Latino Americans, 2.9 years for African Americans, and 1.2 years for White ...