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

. 2021 Sep 20;59(10):e01001-21. doi: 10.1128/JCM.01001-21

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

Copyright © 2021 American Society for Microbiology.

All Rights Reserved.

This article is made available via the PMC Open Access Subset for unrestricted noncommercial re-use and secondary analysis in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic.

PMC Copyright notice

FIG 2 — Variation in the diagnostic sensitivity of the SARS-CoV-2 NP ELISA according to the time gap from the first PCR-positive URT swab to first blood sampling. The blood sample was collected from each of 160 COVID-19 inpatients within 5 weeks after their confirmatory PCR-positive URT swab (red circle) and from each of 43 COVID-19 outpatients simultaneously with their PCR-positive URT swab (blue square). The data point area is proportional to the number of inpatients contributing to the data point.