Open AccessReceptor‐binding Domain Severe Acute Respiratory Syndrome Coronavirus 2‐specific Antibodies in Human Milk From Mothers With Coronavirus Disease 2019 Polymerase Chain Reaction or With Symptoms Suggestive of Coronavirus Disease 2019
Author(s) -
DemersMathieu Veronique,
DaPra Ciera,
Fels Shawn,
Medo Elena
Publication year - 2021
Publication title -
journal of pediatric gastroenterology and nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.206
H-Index - 131
eISSN - 1536-4801
pISSN - 0277-2116
DOI - 10.1097/mpg.0000000000003158
Subject(s) - antibody , coronavirus , medicine , immunoglobulin a , immunoglobulin g , immunology , virology , immunoglobulin m , polymerase chain reaction , covid-19 , disease , biology , infectious disease (medical specialty) , gene , biochemistry
This study aims to compare the receptor‐binding domain (RBD) severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2)‐specific antibody titers in human milk between mothers with a confirmed coronavirus disease 2019 (COVID‐19) polymerase chain reaction (PCR) test and mothers with viral symptoms suggestive of COVID‐19. The area under the curve (AUC) for RBD SARS‐CoV‐2‐specific secretory immunoglobulin A (SIgA)/immunoglobulin A (IgA), secretory immunoglobulin M (SIgM)/immunoglobulin M (IgM), immunoglobulin G (IgG), and free secretory components (fSC) in milk samples from eight mothers with a confirmed COVID‐19 PCR, eight mothers with viral symptoms (no PCR testing), and six unexposed mothers (pre‐pandemic 2018). AUCs of RBD SARS‐CoV‐2‐specific SIgA/IgA, SIgM/IgM, IgG, and fSC in milk samples were comparable between mothers with confirmed COVID‐19 PCR and mothers with viral symptoms of suggestive COVID‐19. AUCs of RBD‐specific SIgA/IgA, IgG, and fSC were higher in the COVID‐19‐exposed group than in the unexposed group, and SIgM/IgM tended to be higher in the exposed mothers. In conclusion, women with viral symptoms suggestive of COVID‐19 could secrete antibodies and fSC specific to SARS‐CoV‐2 in human milk.