San Diego County COVID-19 Update – 5-18-2021

Teenage boy gets his COVID-19 vaccination.

Here is today’s COVID-19 update from the County Health and Human Services Agency with data through May 17.

Vaccination Progress:

  • Doses delivered: About 3.9 million.
  • Doses administered: Almost 3.37 million.
  • Received at least one shot: Over 1.8 million or 64.3% of San Diegans 12 and older.
  • Fully vaccinated: About 1.36 million or 48.5%.
  • The goal: fully vaccinate 75% of San Diego County residents 12 and older or 2,101,936 people.
  • To date, 85.8% of the goal population has received at least one vaccine and 64.7% are fully vaccinated.
  • More vaccination information can be found

State Metrics:

  • San Diego County’s state-calculated, adjusted case rate is currently 3.4 cases per 100,000 residents.
  • The testing positivity percentage is 1.6%.
  • The health equity metric is 2.1%.
  • CDPH assesses counties on a weekly basis. The next report is scheduled for Tuesday, May 25.

Community Setting Outbreaks:

  • One new community outbreak was confirmed May 17 in a faith-based agency setting.
  • In the past seven days (May 11 through May 17), 8 community outbreaks were confirmed.
  • The community outbreaks trigger is seven or more in seven days.


  • 7,688 tests were reported to the County on May 17, and the percentage of new positive cases was 1%.
  • The 14-day rolling average percentage of positive cases is 1.5%. Target is less than 8.0%.
  • The 7-day, daily average of tests is 11, 280.

Cases, Hospitalizations and ICU Admissions:

  • 108 COVID-19 cases were reported to the County on May 17. The region’s total is now 279,253.
  • 15,355 or 5.5% of all cases have required hospitalization.
  • 1,696 or 0.6% of all cases and 11% of hospitalized cases had to be admitted to an intensive care unit.


  • No new COVID-19 deaths were reported on Monday, May 17. The region’s total is 3,742.

More Information:

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



Katie Cadiao is a communications specialist with the County of San Diego Communications Office. Contact