— COVID-19 Timeline
Then, now and beyond
Key events and moments at UC San Diego Health, in San Diego and around the world
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2019
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2020
- Jan 20
- Jan 23
- Feb 05
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Feb 11
WHO formally names the disease caused by the novel coronavirus SARS-CoV-2: COVID-19 (CO for corona, VI for virus and D for disease)
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Mar 09
First reported community case of COVID-19 in San Diego County, a woman in her 50s.
- Mar 11
- Mar 13
- Mar 16
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Mar 19
California becomes the first state to issue a stay-at-home order.
- Mar 20
- Mar 22
- Apr 06
- May 05
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Jun 18
California Governor Gavin Newsom makes face coverings mandatory after local mandates experience pushback.
- Jul 24
- Aug 17
- Aug 28
- Sep 02
- Sep 16
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Sep 28
Global death toll from COVID-19 reaches 1 million.
- Oct 01
- Dec 07
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Dec 11
FDA authorizes emergency use of Pfizer’s COVID-19 vaccine.
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Dec 15
UC San Diego Health receives first shipment of Pfizer vaccine.
- Dec 16
- Dec 18
- Dec 22
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2021
- Jan 07
- Jan 11
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Jan 15
UC San Diego Health begins vaccinating eligible patients. San Diego County records peak number of COVID-19 deaths in one day: 58.
- Feb 08
- Feb 11
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Feb 22
Total COVID-19 death toll in U.S. passes 500,000.
- Feb 25
- Feb 27
- Mar 08
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Mar 19
One hundred millionth dose of COVID-19 vaccine administered in U.S. since January 20
- Mar 20
- Apr 01
- Apr 15
- Apr 17
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Apr 19
All U.S. adults now eligible for COVID-19 vaccinations.
- May 10
- May 24
- Jun 01
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Jun 04
UC San Diego Health administers 500,000 doses in roughly six months
- Jun 14
- Jun 29
- Jul 04
- Jul 15
- Aug 13
- Aug 17
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Aug 31
California reaches vaccine milestone, with more than 80 percent of eligible people have received at least one dose of the COVID-19 vaccine.
- Sep 01
- Sep 06
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Sep 09
President Biden announces federal vaccine mandate for as many as 100 million Americans.
- Sep 20
- Sep 22
- Sep 23
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