Recommendations for use of antigenic tests in the diagnosis of acute SARS-CoV-2 infection in the second pandemic wave : attitude in different clinical settings

©The Author 2020. Published by Sociedad Española de Quimioterapia. This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)(https://creativecommons.org/licenses/by-nc/4.0/)..

The high transmissibility of SARS-CoV-2 before and shortly after the onset of symptoms suggests that only diagnosing and isolating symptomatic patients may not be sufficient to interrupt the spread of infection; therefore, public health measures such as personal distancing are also necessary. Additionally, it will be important to detect the newly infected individuals who remain asymptomatic, which may account for 50% or more of the cases. Molecular techniques are the "gold standard" for the diagnosis of SARS-CoV-2 infection. However, the massive use of these techniques has generated some problems. On the one hand, the scarcity of resources (analyzers, fungibles and reagents), and on the other the delay in the notification of results. These two facts translate into a lag in the application of isolation measures among cases and contacts, which favors the spread of the infection. Antigen detection tests are also direct diagnostic methods, with the advantage of obtaining the result in a few minutes and at the very "pointof-care". Furthermore, the simplicity and low cost of these tests allow them to be repeated on successive days in certain clinical settings. The sensitivity of antigen tests is generally lower than that of nucleic acid tests, although their specificity is comparable. Antigenic tests have been shown to be more valid in the days around the onset of symptoms, when the viral load in the nasopharynx is higher. Having a rapid and real-time viral detection assay such as the antigen test has been shown to be more useful to control the spread of the infection than more sensitive tests, but with greater cost and response time, such as in case of molecular tests. The main health institutions such as the WHO, the CDC and the Ministry of Health of the Government of Spain propose the use of antigenic tests in a wide variety of strategies to respond to the pandemic. This document aims to support physicians involved in the care of patients with suspected SC2 infection, in the context of a growing incidence in Spain since September 2020, which already represents the second pandemic wave of COVID-19.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:33

Enthalten in:

Revista espanola de quimioterapia : publicacion oficial de la Sociedad Espanola de Quimioterapia - 33(2020), 6 vom: 30. Dez., Seite 466-484

Sprache:

Englisch

Beteiligte Personen:

Candel, F J [VerfasserIn]
Barreiro, P [VerfasserIn]
San Román, J [VerfasserIn]
Abanades, J C [VerfasserIn]
Barba, R [VerfasserIn]
Barberán, J [VerfasserIn]
Bibiano, C [VerfasserIn]
Canora, J [VerfasserIn]
Cantón, R [VerfasserIn]
Calvo, C [VerfasserIn]
Carretero, M [VerfasserIn]
Cava, F [VerfasserIn]
Delgado, R [VerfasserIn]
García-Rodríguez, J [VerfasserIn]
González Del Castillo, J [VerfasserIn]
González de Villaumbrosia, C [VerfasserIn]
Hernández, M [VerfasserIn]
Losa, J E [VerfasserIn]
Martínez-Peromingo, F J [VerfasserIn]
Molero, J M [VerfasserIn]
Muñoz, P [VerfasserIn]
Onecha, E [VerfasserIn]
Onoda, M [VerfasserIn]
Rodríguez, J [VerfasserIn]
Sánchez-Celaya, M [VerfasserIn]
Serra, J A [VerfasserIn]
Zapatero, A [VerfasserIn]

Links:

Volltext

Themen:

Antigenic test
Antigens, Viral
COVID-19
Consensus Development Conference
Diagnosis
Emergency departments
Journal Article
Microbiology
Nursing home and long-term facilities
PCR
Pediatrics
Practice Guideline
Primary care
SARS-CoV2

Anmerkungen:

Date Completed 10.12.2020

Date Revised 04.11.2023

published: Print-Electronic

Citation Status MEDLINE

doi:

10.37201/req/120.2020

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM316400076