Timeline of COVID-19 from onset to global 10 million patients.

Timeline by from the Johns Hopkins Center for Health Security.
Data by Center for Systems Science and Engineering, Johns Hopkins University.
Data Visualization by COVID-19 Research Consortium, the Hopkins Club for Innovation and Entrepreneurship and LINKMedicine team.
Video designed by LINKMedicine team.

Timeline:
December 31: Wuhan Municipal Health Commission publishes the initial report of unidentified pneumonia, potentially linked to a local market

January 6: US CDC issues a Level 1 travel watch for Wuhan, China
January 11: First reported COVID-19 death in China
January 13: First COVID-19 case reported outside of China
January 21: First COVID-19 case reported in the US
January 23: China implements “lockdown” in Wuhan
January 24: First imported COVID-19 cases reported in Europe (France)
January 27: US CDC issues Level 3 travel warning for China, recommending against non-essential travel
January 27: First documented SARS-CoV-2 transmission in Europe (Germany)
January 29: First COVID-19 cases reported in Eastern Mediterranean Region (United Arab Emirates)
January 30: WHO declares COVID-19 a Public Health Emergency of International Concern
January 30: US CDC confirms first domestic transmission of SARS-CoV-2
January 31: US implements travel restrictions for Mainland China

February 5: The Diamond Princess cruise ship is quarantined in Yokohama, Japan, due to an ongoing COVID-19 outbreak onboard that resulted in at least 712 confirmed cases, including 9 deaths
February 25: First COVID-19 case reported in the African Region (Algeria)*
February 27: South Korea surpasses China as #1 globally in terms of daily COVID-19 incidence
February 29: US implements travel restrictions for Iran

March 4: Seattle and King County, Washington (US), advises high-risk individuals to avoid large gatherings
March 8: Italy implements “lockdown” for affected areas of the Lombardy region in Northern Italy
March 10: Italy expands “lockdown” measures to the entire country
March 11: US implements travel restrictions for all of Europe
March 11: WHO declares COVID-19 a pandemic
March 13: US declares the COVID-19 epidemic to be a national emergency
March 14: US implements travel restrictions for the UK and Ireland
March 15: National “lockdown” goes into effect in Spain
March 16: Six counties in the San Francisco Bay Area, California (US), issue the country’s first shelter-in-place orders
March 18: The WHO announces the SOLIDARITY Trial, a global collaboration to conduct clinical trials for prospective COVID-19 medical countermeasures
March 19: California (US) issues the first statewide “stay at home” order
March 23: The University of Oxford (UK) begins enrolling patients for the RECOVERY Trial, a nationwide clinical trial effort in the UK for COVID-19 MCMs
March 24: National “lockdown” ordered in India
March 24: The International Olympic Committee announces that the 2020 Olympic Games, scheduled to be hosted in Japan, are postponed
March 27: US CDC expands travel restrictions to cover all other countries
March 28: US CDC issues domestic travel advisory for New York, New Jersey, and Connecticut
March 28: Italy surpasses China as #1 globally in terms of cumulative COVID-19 incidence
March 29: US surpasses Italy as #1 globally in terms of cumulative COVID-19 incidence (and remains #1 today)

April 4: 1 million global cases

May 15: US government unveils Operation Warp Speed, a program to drive development and production of medical countermeasures against COVID-19
May 17: WHO reports more than 100,000 new cases in a single day
May 23: 5 million global cases
May 24: US implements travel restrictions for Brazil
May 28: US surpasses 100,000 cumulative reported COVID-19 deaths
May 29: New York (US) enters Phase 1 of recovery (NYC on June 8)

June 8: New Zealand declares SARS-CoV-2 eliminated
June 11: European Commission recommends that European countries remove internal border restrictions by June 15 to enable travel within the continent
June 29: 10 million global cases
June 30: 500,000 global deaths
June 30: European Council announces that European countries would lift travel restrictions for 15 countries beginning July 1