Daily SARS-CoV-2 Nasal Antigen Tests Miss Infected and Presumably Infectious People Due to Viral Load Differences among Specimen Types

Author:

Viloria Winnett Alexander1,Akana Reid1,Shelby Natasha1ORCID,Davich Hannah1ORCID,Caldera Saharai1,Yamada Taikun23,Reyna John Raymond B.2,Romano Anna E.1,Carter Alyssa M.1,Kim Mi Kyung1,Thomson Matt1,Tognazzini Colten4ORCID,Feaster Matthew4ORCID,Goh Ying-Ying4,Chew Yap Ching23,Ismagilov Rustem F.1ORCID

Affiliation:

1. California Institute of Technology, Pasadena, California, USA

2. Pangea Laboratory LLC, Tustin, California, USA

3. Zymo Research Corporation, Irvine, California, USA

4. Pasadena Public Health Department, Pasadena, California, USA

Abstract

We reveal three findings from a longitudinal study of daily nasal antigen rapid diagnostic test (Ag-RDT) evaluated against SARS-CoV-2 viral load quantification in three specimen types (saliva, nasal swab, and throat swab) in participants enrolled at the incidence of infection. First, the evaluated Ag-RDT showed low (44%) clinical sensitivity for detecting infected persons at all infection stages.

Funder

CIT | Linde Center, California Institute of Technology

Jacobs Institute for Molecular Engineering for Medicine, Caltech

UCLA DGSOM Geffen Fellowship

Publisher

American Society for Microbiology

Subject

Infectious Diseases,Cell Biology,Microbiology (medical),Genetics,General Immunology and Microbiology,Ecology,Physiology

Reference63 articles.

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