23 January 2019, the US Department of Health and Human Services started a national exercise called Crimson Contagion, assuming a respiratory virus from China spreads to all over the world due to travelers with fever

12 March 2019, collected waste water in Barcelona tested SARS-CoV-2, according to the University of Barcelona

July 2019, the US had an outbreak of lung injury with similar symptoms as COVID-19

July 2019, Fort Detrick biodefense center suddenly stopped its germs and toxins research work

September 2019, Italian blood samples taken in the Lombardi region showed Sars-CoV-2 virus antibodies, according to Milan National Cancer Institute

17 September 2019, US Army Public Health Alert classified 2 cases in the military as e-cigarette problems

9 October 2019, U.S. Army medical officials publicly confirmed the two active-duty soldiers with COVID-19 similar symptoms

18 October 2019, the Johns Hopkins Center for Health Security hosted Event 201, a global coronavirus pandemic exercise

31 December 2019, China reported a cluster of cases of pneumonia in Wuhan, Hubei Province. A novel coronavirus was identified


1 January 2020, Huanan Seafood Wholesale market closed

3 January 2020, China alerted the WHO

5 January 2020, the WHO reported the cases on its social media account

7 January 2020, the latest date of COVID-19 traces in the U.S., according to the updated research result based on CDC from the U.S. National Institutes of Health

11 January 2020, China recorded its first death linked to COVID-19

12 January 2020, China publicly shared the genetic sequence of COVID-19

19 January 2020, COVID-19 had been in the U.S., according to research from the U.S. Centers for Disease Control and Prevention

20-21 January 2020, WHO experts from its China and Western Pacific regional offices conducted a brief field visit to Wuhan

21 January 2020, Chinese scientist confirmed COVID-19 human transmission; the U.S. reported its first confirmed case: Italy had COVID-19 cases

23 January 2020, Wuhan started quarantine, the U.S. started evacuating its citizens from the region

24 January 2020, Trump praised China for its efforts to prevent the spread of the virus on twitter

late January 2020, COVID-19 had been in France, according to research led by Dr. Yves Cohen

30 January 2020, the WHO declared COVID-19 a “Public Health Emergency of International Concern”; at a campaign rally in Iowa, Trump talked about the U.S. partnership with China to control the disease.

2 February 2020, global air travel to the U.S. from China was restricted

3 February 2020, the U.S. declared Public Health Emergency

16-24 February 2020, the WHO-China Joint mission, which included experts from Canada, Germany, Japan, Nigeria, Republic of Korea, Russia, Singapore and the US spent time in Beijing and also travelled to Wuhan and two other cities

18 February 2020, 2,807 hospitalized cases or deaths reported as e-cigarette cases to CDC in the U.S., since then similar cases started to be classified as COVID-19

8 March 2020, Italy placed all 60 million of its residents on lockdown

11 March 2020, the WHO officially declared COVID-19 a pandemic

13 March 2020, Trump banned all travel from 26 European countries

19 March 2020, China reported no new locally spread infections for the first time since the pandemic began

26 March 2020, The U.S. had 100,000 confirmed coronavirus cases, more than any other country

1 April 2020, U.S. Army Public Affairs announced that Fort Detrick continued to study SARS-CoV-2 research since suspension in July 2019

7 April 2020, Trump criticized the WHO for not following the U.S. wishes to criticize China on the pandemic issues

8 April 2020, Tedros urged political leaders not to politicize COVID like Trump did

22 June 2020, study suggested 80% of cases in the U.S. in March went undetected

7 July 2020, the U.S. surpassed 3 million infections and began its withdrawal from WHO

1 September 2020, the U.S. rejected WHO global COVID-19 vaccine effort

2 October 2020, Trump, First Lady tested positive for COVID-19; Trump entered Hospital

5 October 2020, Trump left Hospital, gave speech to get more votes for presidential election


14 January 2021, a 34-member WHO-China joint expert team carried out a 28-day research mission in Wuhan

30 March 2021, joint WHO-China study was published, denying the possibility of Wuhan’s laboratory leak

30 March 2021, the U.S. published a joint statement signed by 13 countries to demand a new and fast investigation based on the source of COVID-19 in China.

15 July 2021, Director-General of the WHO proposed to make a second investigation on the origins of COVID-19 based on the main hypothesis that China’s violation of laboratory procedures caused virus leakage