Contact Tracing Statistics
In contact tracing, public health staff work with an individual who has a positive test for COVID-19 to help them recall everyone with whom they have had close contact during the timeframe while they may have been infectious.
As of December 27th 2021, the information on this page is no longer being collected, and thus this report will not be updated.
Read more about Delaware's contact tracing plan
As of December 27th 2021, the information on this page is no longer being collected, and thus this report will not be updated.
Read more about Delaware's contact tracing plan
June 27, 2020 - December 27, 2021
Represents all data since the launch of the current contact tracing system. Earlier cases were investigated and contact traced using a different system.
Total contacts named
237,803
Contacts reached
130,451
55%
of total contacts named
Avg. contacts per case
2.5
Cases with known exposure to another case
36,113
22%
of total positive cases
Total positive cases
Reported June 27, 2020 - December 27, 2021.162,464
5,486
3%
of total positive cases
Cases not eligible for interview
- Incarcerated cases: 1369
- Hospitalized cases: 2229
- Long-term care cases: 1888
Cases eligible for interview
No attempt is made to interview incarcerated persons, hospitalized persons, and long-term care residents because these individuals are monitored by the institutions responsible for their care.156,978
97%
of total positive cases
39,771
25%
of cases eligible for interview
Cases without a validated phone number
Phone numbers that are originally provided may not always be correct or current and are therefore evaluated for validity. Only valid phone numbers (work, home, cell, etc.) are counted on this dashboard. New efforts to obtain and validate phone numbers are being explored.Cases with a valid phone number
117,207
75%
of cases eligible for interview
39,403
25%
of cases eligible for interview
Cases not reached
Not all those eligible for interview are reached.Reasons why people aren't reached right away:- Person is unavailable or busy
- Interviewer gets no answer, voice mail, or busy signal
- Interviewer is told they have the wrong number, is disconnected, or gets fast busy signal
- Person is determined to be hospitalized or incapacitated
- Person fails to verify their identity on the phone
- Person is determined to be deceased
Cases reached
Includes cases that could not be reached by phone that were reached by field teams. Cases reached within 24 hours: 79143 or 67%117,575
75%
of cases eligible for interview
24,052
20%
of cases reached
Cases who did not complete interview
Not all those who are reached are interviewed immediately.Reasons for a delayed interview:- Person is hard of hearing, will be interviewed by an ESL interpreter in person
- Person has a language barrier, will be interviewed by the appropriate interpreter
- Person was busy, made an appointment for a later time
- Person did not consent to being interviewed
- Person refused to speak with interviewer
- Person told interviewer they never tested positive
Cases who completed interview
93,523
80%
of cases reached
31,698
34%
of cases who completed interview
Cases who named no contacts
Cases who named at least one contact
61,825
66%
of cases who completed interview
Total contacts named
237,803
108,755
46%
of total contacts named
Contacts without a valid phone number
Phone numbers that are originally provided may not always be correct or current and are therefore evaluated for validity. Only valid phone numbers (work, home, cell, etc.) are counted on this dashboard. New efforts to obtain and validate phone numbers are being explored.Contacts with a valid phone number
129,048
54%
of total contacts named
107,352
45%
of total contacts named
Contacts not reached
Not all those eligible for interview are reached.Reasons why people aren't reached right away:- Person is unavailable or busy
- Interviewer gets no answer, voice mail, or busy signal
- Interviewer is told they have the wrong number, is disconnected, or gets fast busy signal
- Person is determined to be hospitalized or incapacitated
- Person fails to verify their identity on the phone
- Person is determined to be deceased
Contacts reached
Includes contacts that could not be reached by phone that were reached by field teams.130,451
55%
of total contacts named
28,620
22%
of contacts reached
Contacts who did not complete interview
Not all those who are reached are interviewed immediately.Reasons for a delayed interview:- Person is hard of hearing, will be interviewed by an ESL interpreter in person
- Person has a language barrier, will be interviewed by the appropriate interpreter
- Person was busy, made an appointment for a later time
- Person did not consent to being interviewed
- Person refused to speak with interviewer
Contacts who completed interview
101,831
78%
of contacts reached
98,755
97%
of contacts who completed interview
Contacts not known to be tested or tested negative
Contacts are encouraged but not required to get tested. Contacts known to be tested and tested negative: 660 or 1% Contacts not known to be tested: 98095 or 96%Contacts known to be tested and tested positive
Contacts are asked by the interviewer if they have been tested for COVID.3,076
3%
of contacts who completed interview
Help us trace the virus: Answer the call
Additional ways you can help:
- Provide a valid, up-to-date phone number when you get tested, so we have the best contact information to reach you.
- Ensure your doctor has your current phone number on file if you get tested by your primary care provider.
- If you test positive, start thinking about the people you have had close contact with recently.
- If you get a call from (302) 446-4262, or your caller ID says DE PUBLICHEALTH, that’s a representative from the Delaware Contact Tracing Program calling to give you important information about your health. Please answer the call and take the time to speak with our contact tracers.
