Tracing Health

COVID-19 Case Investigation & Contact Tracing

Case Investigation and Contact Tracing are public health strategies used to contain the spread of an infectious disease within a community. For over a century, public health professionals have used these strategies to fight infectious diseases like smallpox, sexually transmitted infections, tuberculosis, and Ebola.  

Tracing Health contact tracers go through a rigorous introductory training with over 100 hours of education and practical skill-building. Each employee is trained in interviewing techniques, HIPAA compliance, multiple databases, and customer service. All Tracing Health team members are certified in Mental Health First Aid. 

The success of case investigation and contact tracing depends on the interviewer’s ability to build trust and rapport with the individual being interviewed. Tracing Health’s multilingual team members communicate with most cases and contacts in their preferred language and often share their cultural background. This shared experience reduces the need for interpreter services and allows the Tracing Health team to build trust and deliver critical information that saves lives. 

What is Case Investigation? In a case investigation, a public health worker interviews someone who has tested positive for COVID-19 (the “case”) and helps them recall and identify each of the people with whom they have had contact during the period that they may have been infectious. Case investigators also educate individuals who have tested positive on the importance of isolation, and the ways they can help keep their loved ones and communities safe.  

What is Contact Tracing?  The definition of contact tracing is the process of identifying individuals who have been exposed to COVID-19, alerting them of this exposure, and providing important health education. In certain circumstances, contact tracers advise individuals who have been exposed to COVID-19 to quarantine for a period of time in order to avoid exposing others to the virus. 

NEXT: COVID-19 Resource Coordination

Contact Tracing In Action

Click a video for firsthand experiences from our frontline contact tracing team.

“It is extremely important to get to positive cases quickly because the quicker you are able to talk to someone who has COVID-19, hopefully the less exposure they give to others and therefore we are able to reduce the spread of COVID-19. So it does make a big difference.”

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Beth Midanik-Blum, Teams Manager

“Contact tracing is is more than just tracing someone’s contacts. It’s being there for them. It’s letting them know that I’m human as well. You don’t have to just give me your information. You can talk to me. I’m a real person, so let them know that real recognize real. Its more than just collecting data.”

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Jennifer Franklin, Contact Tracer

“Our Tracing Health team is unique because we are just like everybody else. We are not medical professionals and that makes it easier for us to connect with the rest of the public. And, you know, instead we can take complex words and we can break it down to our language for the average person.”

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Julian Hofschneider, Bilingual Contact Tracer

“Every single person on my team is bilingual. When it comes to Spanish speaking cases, they are often faced with misinformation, so providing them credible information is invaluable.”

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Lorenzo Sotolongo, Bilingual Contact Tracer

“I’m going to call you every day to know how you’re doing, how your husband is doing, how your children are doing. And I want to give you anything that the county can get – all the help. I will help you with the whole process.”

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Omar Vargas, Bilingual Contact Tracer Supervisor

“I have one goal in life, and that is to continue to serve the public. My purpose here on this planet is to provide the best possible service to those who I encounter on the street, to those who might be struggling with income disparities or from those who might not have what I have, I want to continue to be a public servant and serve the public in my best capacity.”

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John Franco, Bilingual Resource Coordinator

“I believe building up this robust team of contact tracers is important because we must do as much as we can to break that chain of infectious people which builds exponentially.”

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Francisco Gomez, Bilingual Senior Program Manager


60% of Tracing Health Case Investigators & Contact Tracers come from the communities they serve.


40,000+ positive COVID-19 cases were assigned by counties to Tracing Health in California.


46,700+ Household contacts were generated from completed case investigations.

Get in Touch

For more information about our services or about partnering with Tracing Health please contact us.