Volume 26, Number 8—August 2020
Synopsis
Investigation and Serologic Follow-Up of Contacts of an Early Confirmed Case-Patient with COVID-19, Washington, USA
Figure 2

Figure 2. Contact investigation flowchart of identified contacts, active monitoring, and participation in the enhanced contact investigation of an early confirmed US coronavirus disease case, Washington, USA, 2020. NP, nasopharyngeal; OP, oropharyngeal; PUI, person under investigation. *Includes contacts from whom specimens obtained for PUI testing. †Specimens were unable to be tested if blood could not be obtained (n = 5) or if the standard specimen requirements for testing were not met (n = 2).
1These authors contributed equally to this article.
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