Epidemiology Unit—2019 Novel Coronavirus
- Coronavirus Disease 2019 (COVID-19) in San Diego County
- What is 2019 novel coronavirus?
- How is 2019 novel coronavirus acquired or transmitted?
- What are the symptoms of 2019 novel coronavirus?
- How can you protect yourself?
- FAQs and Handouts
- Information for Health Professionals
- Additional Resources
The World Health Organization (WHO), the Centers for Disease Control and Prevention (CDC), and state and local jurisdictions across the nation are closely monitoring an outbreak of respiratory illness caused by a novel (new) coronavirus (COVID-19). It was first detected, in December 2019, in Wuhan City, Hubei Province, China and continues to expand. Chinese health officials have reported thousands of infections with COVID-19 in China, including outside of Hubei Province. A number of countries, including the United States, are actively screening incoming travelers from Wuhan. Human infections with COVID-19 have been confirmed in Taiwan, Thailand, Japan, and South Korea. The United States announced its first case detected in a traveler returning from Wuhan to Washington state on January 21, 2020.
The 2019 novel coronavirus is a rapidly emerging and evolving situation. Visit the Centers for Disease Control and Prevention website for updated information and guidance as it becomes available.
The County of San Diego is working closely with our federal and state partners to monitor an outbreak of respiratory illness caused by a novel coronavirus (COVID-19). These tables will be updated regularly.
Patients Under Investigation (PUIs) in San Diego County
2019 Novel Coronavirus (COVID-19)
Updated February 21, 2020
|San Diego County1||Federal Quarantine2||Non-San Diego County Residents3|
|Positive (confirmed cases)||0||2||0|
1This includes Customs and Border Protection (CBP) and Immigration Customs Enforcement (ICE) local detainees.
2Individuals on repatriation flights (2/5/20 and 2/7/20) from Wuhan, China under federal quarantine at Marine Corps Air Station (MCAS) Miramar.
3Non-residents include out-of-country visitors.
Number of People Under Public Health Supervision4
in San Diego County
Updated February 21, 2020
|Persons monitored (cumulative)||338|
|Persons actively being monitored||204|
|Persons who completed their monitoring||134|
|4The number of people under public health supervision includes those at risk of having been exposed to novel coronavirus who are monitoring their health under the supervision of public health officials. This number includes close contacts of laboratory confirmed cases, as well as people who have returned from China in the past 14 days.|
Coronaviruses are a large family of viruses that are common in many different species of animals, including camels, cattle, cats, and bats.
Since December 2019, Chinese authorities have identified thousands of human infections, including several dozen deaths, associated with this novel (new) coronavirus in an outbreak of pneumonia in Wuhan City, Hubei Province, China. In addition, novel coronavirus infections have been confirmed in numerous international travelers in multiple countries, including the Untied States, who traveled to or came from Wuhan City.
Rarely, animal coronaviruses can infect people and then spread between people such as with Middle East respiratory syndrome (MERS) and severe acute respiratory syndrome (SARS). Many of the patients in the pneumonia outbreak caused by COVID-19 in Wuhan, China had some link to a large seafood and live animal market, suggesting animal-to-person spread. However, a growing number of patients diagnosed with COVID-19 have not reported exposure to animal markets, indicating person-to-person spread is occurring.
When person-to-person spread occurred with MERS and SARS, it is thought to have happened via respiratory droplets produced when an infected person coughed or sneezed, similar to how influenza and other respiratory illnesses spread. The spreading of SARS and MERS between people generally occurred in people who had close contacts with others who were infected.
How easily a virus spreads from person-to-person can vary. Some viruses are highly contagious (like measles), while other viruses do not spread as easily. It is not yet clear how easily COVID-19 spreads from person-to-person. It is important to know this in order to better understand the risk associated with this virus.
Investigations are ongoing about the transmissibility, severity, and other features associated with COVID-19. The latest situation summary updates are available on CDC’s web page 2019 Novel Coronavirus, Wuhan, China.
Patients with confirmed COVID-19 infection have reported mild to severe respiratory illness with symptoms of:
- shortness of breath/difficulty breathing
At this time, the CDC believes that symptoms of COVID-19 may appear in as few as 2 days or as long as 14 days after exposure.
- Wash your hands often with soap and water for at least 20 seconds. If soap and water are not available, use an alcohol-based hand sanitizer.
- Avoid touching your eyes, nose, and mouth with unwashed hands.
- Avoid close contact with people who are sick.
- Stay home when you are sick.
- Cover your cough or sneeze with a tissue, then throw the tissue in the trash.
- Clean and disinfect frequently touched objects and surfaces.
These everyday habits can help prevent the spread of several viruses.
People who think they may have been exposed to COVID-19 should contact their health care provider immediately.
*If you are traveling, read the CDC recommentions on What travelers can do to protect themselves and others.
- 2019 Novel Coronavirus (COVID-19) Frequently Asked Questions (2/14/20)
- 2019 Novel Coronavirus (2019-nCoV) Flyer
- Coronavirus Fact Sheet (English)
- Coronavirus Fact Sheet (Spanish)
- Coronavirus Fact Sheet (Chinese)
- CDPH Coronavirus Alert Poster (English)
- CDPH Coronavirus Alert Poster (Spanish)
- CDPH Coronavirus Alert Poster (Simplified Chinese)
- CDPH Coronavirus Alert Poster (Arabic)
County of San Diego Health and Human Services Agency
- County News Center Story: County Public Health Lab Now Able to Test for New Coronavirus (2/27/20)
- County News Center Story: How San Diego County Monitors Potential COVID-19 Cases (2/21/20)
- County News Center Story: Traveler to China Tested Negative for New Coronavirus (1/30/20)
Centers for Disease Control and Prevention Resources:
- 2019 Novel Coronavirus: Information for Healthcare Professionals
Suspected cases of COVID-19 should be reported by telephone to
the San Diego County Epidemiology Unit immediately at (619)
692-8499 during business hours or at (858)-565-5255 after hours,
on weekends, or holidays.
County of San Diego
- CAHAN San Diego Health Advisory: 2019 Novel Coronavirus Update (2/1/20)
- CAHAN San Diego Health Advisory: 2019 Novel Coronavirus (1/24/20)
California Department of Public Health
- CDPH All Facilities Letter: Environmental Infection Control for the Coronavirus Disease 2019 (COVID-19) (2/19/20)
All Facilities Letter: Health Update and Interim Guidance—2019 Novel
Centers for Disease Control and Prevention
- MMWR: Initial Public Health Response and Interim Clinical Guidance for the 2019 Novel Coronavirus Outbreak — United States, December 31, 2019–February 4, 2020 (2/5/20)
- CDC Press Release: First Travel-related Case of 2019 Novel Coronavirus Detected in United States (1/21/20)
- CDC Press Release: Public Health Screening to Begin at 3 U.S. Airports for 2019 Novel Coronavirus (“2019-nCoV”) (1/17/20)
- CDC Telebriefing: Transcript of 2019 Novel Coronavirus Response Telebriefing (1/17/20)
- World Health Organization (WHO) Statement Regarding Cluster of Pneumonia Cases in Wuhan, China
- CDC 2019 Novel Coronavirus, Wuhan, China
- CDC General Information About Coronaviruses
- CDC Communication Resources for Travelers
- U.S. Food & Drug Administration (FDA) Novel Coronavirus (2019-nCoV)
- CDPH Novel Coronavirus 2019 (2019-nCoV)
- Los Angeles County: Learn More About Coronavirus
For more information, contact the Epidemiology Unit at (619) 692-8499 or send us an e-mail.