Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Cycle thresholds (CT) are plotted for matched nasal-oropharyngeal (OP) swab and oral fluid real-time reverse-transcription polymerase chain reaction. Viral burdens that were higher in nasal-OP or oral fluid are shown in blue and red lines, respectively, in (A) all matched specimens, (B) oral fluid only, and (C) oral fluid plus the addition of spit. Samples that were negative in both sample types are not shown.
