key: cord-0807840-9cv0ucha
authors: Mungmunpuntipantip, Rujittika; Wiwanitkit, Viroj
title: Virus antibodies after SARS‐CoV‐2 infection
date: 2021-08-08
journal: Acta Paediatr
DOI: 10.1111/apa.16058
sha: 8a518c1b6dc8a462f83970aba699b681dec09fd8
doc_id: 807840
cord_uid: 9cv0ucha

We would like to share our thoughts on the paper published recently in Acta Paediatrica that stated that severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibodies started to decline just four months after children became infected with the virus.1 Breuer et al also concluded that re-opening schools did not affect infection rates.1 The authors used the Abbott Architect SARS-CoV-2 IgG assay (manufacturer, region, country).1 The diagnostic properties of the test varies and depends on the time after exposure to the antigen.2 That is why different detection rates after vaccination may or may not be related to the diagnostic properties of the diagnostic test at different times.

We would like to share our thoughts on the paper published recently in Acta Paediatrica that stated that severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibodies started to decline just four months after children became infected with the virus. positivity found on a specific test, but rather on the trend over time, which did not change even when schools were reopened or among students who attended school during lockdown. 

SARS-CoV-2 antibodies started to decline just four months after COVID-19 infection in a paediatric population

SARS-CoV-2 antibody response in persons with past natural infection

Comparison of the diagnostic sensitivity of SARS-CoV-2 nucleoprotein and glycoproteinbased antibody tests

Comparing results of five SARS-CoV-2 antibody assays before and after the first dose of ChAdOx1 nCoV-19 vaccine among health care workers