SARS-CoV-2 (contacts) to facilitate prompt isolation and quarantine in order to prevent further spread of SARS-CoV-2. The contact elicitation window is defined according to the infectious period.
The greatest impact in preventing the further spread of COVID-19 occurs when contacts begin quarantine within 6 days of exposure to a person with COVID-19, regardless of the presence of symptoms.
is another valuable approach to contact tracing. It involves looking back over the to symptom onset or specimen collection date (for asymptomatic cases) and identifying interactions with people (close contacts), places, and events that may have been the source of the infection for the person with COVID-19 (see Figure 1).Read more on cdc.gov