San Diego County COVID-19 Update – 3-19-2021

coronavirus illustration
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Here is today’s COVID-19 update from the County Health and Human Services Agency with data through March 18.

Vaccination Progress:

  • Nearly 1.44 million COVID-19 vaccine doses have been delivered to the region, and over 1.36 million have been logged as administered. This number includes both County residents and those who work in San Diego County.
  • Of those vaccinated to date, nearly 481,000 County residents, or 17.9% of San Diegans 16 and older, are fully immunized.
  • Overall, more than 761,000 County residents have received at least one shot of the two-dose vaccine. That’s 28.3% of those eligible.
  • Those receiving the one-dose Johnson & Johnson vaccine are being added to the total of fully vaccinated San Diegans.
  • The difference between doses delivered and those used in a vaccination represents approximately what is expected to be administered in the next seven days and doses still to be entered in the record system.
  • More information about vaccine distribution can be found on the County’s vaccination dashboard. For details on groups currently eligible and vaccination opportunities, visit

State Metrics:

  • San Diego County’s state-calculated, adjusted case rate is currently 6.8 cases per 100,000 residents. The County is in the Red Tier.
  • Currently, the testing positivity percentage is 2.8%, placing the County in Tier 3 or the Orange Tier.
  • The County’s health equity metric, which looks at the testing positivity for areas with the lowest healthy conditions, is 4.2% and is also in the Orange Tier or Tier 3.
  • While two of the three metrics qualify the County for the Orange Tier or Tier 3, the state assigns counties to the more restrictive tier.
  • The California Department of Public Health assesses counties on a weekly basis. The next report is scheduled for Tuesday, March 23.

Community Setting Outbreaks:

  • One new community outbreak was confirmed March 18 in a daycare/preschool/childcare setting.
  • In the past seven days (March 12 through March 18), 17 community outbreaks were confirmed.
  • The number of community outbreaks remains above the trigger of seven or more in seven days.
  • A community setting outbreak is defined as three or more COVID-19 cases in a setting and in people of different households over the past 14 days.


  • 11,792 tests were reported to the County on March 18, and the percentage of new positive cases was 4%.
  • The 14-day rolling average percentage of positive cases is 2.8%. Target is less than 8.0%.
  • The 7-day, daily average of tests is 11,455.

Cases, Hospitalizations and ICU Admissions:

  • 421 COVID-19 cases were reported to the County on March 18. The region’s total is now 267,177.
  • 13,411 or 5% of all cases have required hospitalization.
  • 1,628 or 0.6% of all cases and 12.1% of hospitalized cases had to be admitted to an intensive care unit.


  • 13 new COVID-19 deaths were reported March 18. The region’s total is 3,491.
  • Nine men and four women died between Jan. 6 and March 18.
  • Two people who died were 80 years or older, three were in their 70s, five were in their 60s, two were in their 50s and one was in their 20s.
  • 11 had underlying medical conditions and two had medical history pending.

More Information:

The more detailed data summaries found on the County’s website are updated around 5 p.m. daily.

José A. Álvarez is a communications specialist with the County of San Diego Communications Office. Contact