Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

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.

View full-text article in PMC

. 2022 May 20:1–4. doi: 10.1017/ice.2022.62

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2022

To the extent this is a work of the US Government, it is not subject to copyright protection within the United States. Published by Cambridge University Press on behalf of The Society for Healthcare Epidemiology of America.

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means subject to acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

PMC Copyright notice

Fig. 1. — RT-PCR Ct values for repeated positive SARS-CoV-2 specimens retested at the CDC and days to specimen collection from initial infection, July 2020–March 2021 (n = 64). (One specimen with Ct = 31 was mistakenly not sent for viral culture.)