2024年7月8日 · CDC updates the recommended quarantine period for people exposed to someone with COVID-19 to wear a mask around others for 10 days and get tested on day 5 if you have been boosted or vaccinated within the last 6 months.

2021年3月9日 · On March 11, 2020, the World Health Organization (WHO) declared COVID-19, the disease caused by the SARS-CoV-2, a pandemic. The announcement followed a rising sense of alarm in the preceding months over a new, potentially lethal virus that was swiftly spreading around the world.

The first human cases of COVID-19 occurred in Wuhan, People's Republic of China, on or about 17 November 2019. [2] . The first confirmed human case in the United States was on 19 January 2020.

On January 31, the Trump Administration, through the U.S. Department of Health and Human Services, declared a public health emergency, and imposed a mandatory 14-day quarantine for any U.S. citizens who has visited Hubei Province in China within the preceding two weeks. It also began denying entry of non-U.S. nationals who had traveled to China ...

On January 30, 2023, the Biden Administration announced it will end the COVID-19 public health emergency declarations on May 11, 2023. Three years after the WHO pandemic declaration, Northwestern Medicine looks back at the milestones we’ve passed and the medical advances we’ve achieved that continue to save lives.

2020年2月4日 · The recent global spread of a deadly coronavirus originating in Wuhan, China, has led world leaders to invoke an ancient tradition to control the spread of illness: quarantine. Humans have herded contagion for millennia.

2020年9月22日 · June 24, 2020: NY, NJ, Conn. tell Florida travelers to quarantine As the United States' outbreak shifts from the Northeast to the South and West, several states put restrictions on travelers from ...

2021年8月9日 · Many places in the United States are starting to reopen and get back to some sort of normal as more people get vaccinated. People ride on a wave swinger at Chicago's Navy Pier on May 14.

By mid-April, disaster declarations were made by all states and territories as they all had increasing cases. A second wave of infections began in June, following relaxed restrictions in several states, leading to daily cases surpassing 60,000.

For most people, March 11 was when the covid-19 crisis first became real. It was the day of a high-profile diagnosis, major event cancellations and an official designation: pandemic....