One potential mechanism for protection from SARS-CoV-2 in infants and young children is through passive immunity via breast milk from a mother previously infected with the novel coronavirus. The primary objectives of this study were to establish the presence of SARS-CoV-2 specific IgA and IgG and to characterize the specific antigenic regions of SARS-CoV-2 proteins that were reactive with antibodies in breast milk from women with confirmed SARS-CoV-2 infection.

中文翻译：

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21 名确诊感染 COVID-19 女性的母乳中 SARS CoV-2 抗体的特征

婴儿和幼儿免受 SARS-CoV-2 保护的一种潜在机制是通过先前感染新型冠状病毒的母亲的母乳获得被动免疫。本研究的主要目的是确定 SARS-CoV-2 特异性 IgA 和 IgG 的存在，并表征 SARS-CoV-2 蛋白的特定抗原区域，这些蛋白与确诊的 SARS-CoV 女性母乳中的抗体发生反应-2 感染。