COVID-19 Weekly Update - San Diego County, California
County of San Diego
COVID-19 Weekly Update
2/23/2023
COVID-19 Hospitalization Rate by Vaccination Status
Hospitalization rate for unvaccinated residents
is 9.8 times higher
than vaccinated residents
Average Daily Hospitalizations per 100,000 People 5 Years and Older
(14-day average : 1/15/2023 ? 1/28/2023)
Unvaccinated* (per 100K - 5+ years)
Vaccinated (per 100K - 5+ years)
3.43
0.35
14-Day Rolling Average COVID-19 Hospitalization Rate by
Vaccination Status in San Diego County Residents Age 5 Years
5.0
and Older in the Previous Three Months
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Hospitalizations per 100,000
Date of Hospital Admission
Unvaccinated*
Vaccinated
According to CDC, several factors likely affect crude case rates by vaccination and booster dose status, making interpretation of recent trends difficult. Limitations include higher
prevalence of previous infection among the unvaccinated and un-boosted groups; difficulty in accounting for time since vaccination and waning protection; and possible differences
in testing practices ( such as at-home tests) and prevention behaviors by age and vaccination status.
*An unvaccinated hospitalization, or death is one that occurs in a person who has not received a COVID-19 vaccine. Partially vaccinated persons are excluded.
A vaccinated hospitalization or death is one that occurs in a person who received at least two doses of a two-dose vaccine series (e.g., Pfizer, Moderna) or one dose of a one-dose
series (e.g., Johnson & Johnson) at least 2 weeks before they tested positive for COVID-19. This includes persons who have received a monovalent or bivalent booster dose.
San Diego County Population from SANDAG 2019 Population Estimates (Prepared June 2020) for persons 5 years of age and older = 3,144,061. The vaccinated population for each
day is the cumulative number of county residents 5 years of age and older documented to have received the final or booster dose of COVID-19 vaccine at least 14 days prior to that
day. The unvaccinated population is the estimated county population 5 years of age and older minus the partially vaccinated, fully vaccinated, and boosted populations. For more
information see the COVID-19 Watch and the Summary of Cases by Vaccination Status. Prepared by the County of San Diego. Data through 2/18/2023, updated 2/23/2023.
2
COVID-19 Deaths by Vaccination Status
Death rate for unvaccinated residents
is 3.5 times higher
than vaccinated residents
Deaths per million
Average Daily Deaths per Million People 5 Years and Older
(28-day average: 1/1/2023 ? 1/28/2023)
Unvaccinated*
Vaccinated
(per million - 5+ years)
(per million - 5+ years)
1.88
0.54
28-Day Rolling Average COVID-19 Death Rate by Vaccination
Status in San Diego County Residents Age 5 Years and Older
2.5
in the Previous Three Months
2.0
1.5
1.0
0.5 0.0
Unvaccinated* Date of Death
Vaccinated
According to CDC, several factors likely affect crude case rates by vaccination and booster dose status, making interpretation of recent trends difficult. Limitations include higher prevalence of previous infection among the unvaccinated and un-boosted groups; difficulty in accounting for time since vaccination and waning protection; and possible differences in testing practices ( such as at-home tests) and prevention behaviors by age and vaccination status. *An unvaccinated hospitalization, or death is one that occurs in a person who has not received a COVID-19 vaccine. Partially vaccinated persons are excluded. A vaccinated hospitalization or death is one that occurs in a person who received at least two doses of a two-dose vaccine series (e.g., Pfizer, Moderna) or one dose of a one-dose series (e.g., Johnson & Johnson) at least 2 weeks before they tested positive for COVID-19. This includes persons who have received a monovalent or bivalent booster dose. San Diego County Population from SANDAG 2019 Population Estimates (Prepared June 2020) for persons 5 years of age and older = 3,144,061. The vaccinated population for each day is the cumulative number of county residents 5 years of age and older documented to have received the final or booster dose of COVID-19 vaccine at least 14 days prior to that day. The unvaccinated population is the estimated county population 5 years of age and older minus the partially vaccinated, fully vaccinated, and boosted populations. For more
information see the COVID-19 Watch and the Summary of Cases by Vaccination Status. Prepared by the County of San Diego. Data through 2/18/2023, updated 2/23/2023.
3
COVID-19 Cases in San Diego County by Illness Onset Date
Confirmed COVID-19 Cases by Date of Episode Date*
San Diego County Residents, N = 983,031
January 3
FDA expands
18,000
June 15
booster eligibility for
17,000 16,000 15,000 14,000
December 13 First shipments of vaccine arrive in
San Diego
California moved
beyond the Blueprint
June 9 San Diego
December 9 FDA expands
booster eligibility for 16-17 year
old's
12+ year old's
13,000
12,000 February 14
11,000 Declared local health
emergency and local
10,000 emergency
July 13 Indoor operations for certain sectors closed
December 6 Regional Stay-at-
Home Order (RSAHO)
County in Yellow Tier
March 17 San Diego County in
August 2 2 million
SD residents
fully
December 9 First Omicron variant case
identified
9,000 8,000 7,000 6,000 5,000 4,000
March 13-18 Local Restrictions
Imposed
March 19 California Stay-at-Home
Order March 29 ? April 4 San Diego orders
June 12 Gyms, hotels, bars, and other businesses open
November 10 San Diego County in
Purple Tier
August 31 CA started Blueprint for a Safer Economy: San Diego
January 25 Red Tier
vaccinated November 11
RSAHO Lifted
April 7 San Diego County in
FDA expands booster eligibility for 18+ year old's
March 5 Orange Tier
1 million doses
administered in San Diego
April 28 1 million SD
October 29 EUA for Pfizer primary series 5-11 year old's
March 29 FDA authorizes second booster dose for select
groups
3,000 renewed indefinitely,
County in
residents fully
2,000
local face covering mandate, cruise ships
Businesses opening incubation
Red Tier
vaccinated
1,000
restricted
period
0
June 17 FDA expands primary series eligibility to 6 months and
older
Vaccine EUA Expansion
Local Actions/Events
State Actions/Events
Illnesses that began during this
time may not yet be
reported
Data are preliminary and subject to change 2020
2021
2022
*Episode date is the earliest date of illness onset date, specimen collection date, date of death, or date reported.
Abbreviations: EUA: emergency use authorization
Data available at: Prepared by County of San Diego, Emergency Operation Center, 2/23/2023.
2023
4
2/14 2/26
3/9 3/21
4/2 4/14 4/26
5/8 5/20
6/1 6/13 6/25
7/7 7/19 7/31 8/12 8/24
9/5 9/17 9/29 10/11 10/23 11/4 11/16 11/28 12/10 12/22
1/3 1/15 1/27
2/8 2/20
3/4 3/16 3/28
4/9 4/21
5/3 5/15 5/27
6/8 6/20
7/2 7/14 7/26
8/7 8/19 8/31 9/12 9/24 10/6 10/18 10/30 11/11 11/23 12/5 12/17 12/29 1/10 1/22
2/3 2/15 2/27 3/11 3/23
4/4 4/16 4/28 5/10 5/22
6/3 6/15 6/27
7/9 7/21
8/2 8/14 8/26
9/7 9/19 10/1 10/13 10/25 11/6 11/18 11/30 12/12 12/24
1/5 1/17 1/29 2/10
COVID-19 Cases by Episode Date
COVID-19 Cases Among San Diego County Residents New Cases by Episode Date*, Last 30 Days (1/20 - 2/18)
400
397
392
381
341
352
324
287
295
301
304
305
315
327
290
274
270
246
243
248
245
New Cases
300
226
170
180
179
179
191
200
153
157
157
127
100
0
2/18
2/17
2/16
2/15
2/14
2/13
2/12
2/11
2/10
2/9
2/8
2/7
2/6
2/5
2/4
2/3
2/2
2/1
1/31
1/30
1/29
1/28
1/27
1/26
1/25
1/24
1/23
1/22
1/21
1/20
Date
Data are preliminary and subject to change. As of 10/3/2021, new case counts include cases that are presumed reinfections, defined as a positive test more than 90 days after the first positive test for a previous infection or an infection with a different lineage.
*Episode date is the earliest available of symptom onset date, specimen collection date, date of death, date reported. Due to testing and reporting lags, additional cases
may be added to previous week totals.
Prepared by County of San Diego, Emergency Operations Center, 2/23/2023
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