刚查了一篇paper，打了疫苗以后，乳汁里有许多许多抗体。这篇paper顺便讲了第一针7天后抗体还没有很多，14天后就有一些了，第二针7天后达到峰值。 https://www.medrxiv.org/content/10.1101/2021.03.06.21252603v1.full.pdf In summary, the study provides evidence for the rapid production of vaccine-specific antibodies, both IgA and IgG. Moreover, neutralizing capacity was observed in all samples. This study also indicates the potential protection of breastfed infants by administration of the BNT162b2 COVID-19 vaccine to the breastfeeding mother. 感觉为了宝宝，我可能得推迟断奶了……
Antibodies, which are also called immunoglobulins, take five basic forms, denoted as IgG, IgA, IgM, IgD and IgE. All have been found in human milk, but by far the most abundant type is IgA, specifically the form known as secretory IgA, which is found in great amounts throughout the gut and respiratory system of adults. These antibodies consist of two joined IgA molecules and a so-called secretory component that seems to shield the antibody molecules from being degraded by the gastric acid and digestive enzymes in the stomach and intestines. 简而言之，乳汁里的抗体是分泌型，不是血清型，自带防消化功能。所以不管是喂给谁吃，都不会被消化。6个月前还是6个月后没区别。
Antibodies, which are also called immunoglobulins, take five basic forms, denoted as IgG, IgA, IgM, IgD and IgE. All have been found in human milk, but by far the most abundant type is IgA, specifically the form known as secretory IgA, which is found in great amounts throughout the gut and respiratory system of adults. These antibodies consist of two joined IgA molecules and a so-called secretory component that seems to shield the antibody molecules from being degraded by the gastric acid and digestive enzymes in the stomach and intestines. 简而言之，乳汁里的抗体是分泌型，不是血清型，自带防消化功能。所以不管是喂给谁吃，都不会被消化。6个月前还是6个月后没区别。 ginnypotter 发表于 2021-03-26 16:06
我自己也问了相关行业的朋友，她也给我发了paper来看。目前没有研究，但是已知的事实是即使妈妈感染了，covid病毒也不会进入乳汁。以此推论，妈妈打了mRNA疫苗，mRNA大概率也不会进入乳汁。我感觉mRNA不进入乳汁就可以，抗体当然是进去越多越好啦。
个人意见，仅供参考，楼主还是要自己拿主意。
https://www.medrxiv.org/content/10.1101/2021.03.06.21252603v1.full.pdf
In summary, the study provides evidence for the rapid production of vaccine-specific antibodies, both IgA and IgG. Moreover, neutralizing capacity was observed in all samples. This study also indicates the potential protection of breastfed infants by administration of the BNT162b2 COVID-19 vaccine to the breastfeeding mother.
感觉为了宝宝，我可能得推迟断奶了……
乳汁里的抗体喂给半岁以上的娃估计也没用吧？都消化掉了。我记得母乳传抗体只适用于六个月以内的娃
Antibodies, which are also called immunoglobulins, take five basic forms, denoted as IgG, IgA, IgM, IgD and IgE. All have been found in human milk, but by far the most abundant type is IgA, specifically the form known as secretory IgA, which is found in great amounts throughout the gut and respiratory system of adults. These antibodies consist of two joined IgA molecules and a so-called secretory component that seems to shield the antibody molecules from being degraded by the gastric acid and digestive enzymes in the stomach and intestines.
简而言之，乳汁里的抗体是分泌型，不是血清型，自带防消化功能。所以不管是喂给谁吃，都不会被消化。6个月前还是6个月后没区别。
这英文和中文好像对不上吧？疫苗的抗体不是第一针IgM，第二针IgG吗？引用的breast milk里IgA最多？所以是想说奶里没有抗体？所以都没有，跟是否消化无关？
不是的，疫苗里的是病毒的特定蛋白的mRNA片段，不是抗体。两针疫苗是一模一样的。接种两次是为了强化效果，增强抗体的产生和记忆。抗体是被接种的人自身产生的。文章里是说乳汁里数量最多的抗体种类是IgA，而这种抗体是不会被消化的。
疫苗不是给人直接注射抗体，而是注射抗原，让人体自身的免疫系统产生抗体和记忆效应。
注射抗体的，就不叫疫苗了，叫治疗手段。比如川普打的那种单抗。
文章是说我们身体产生的抗体有许多种，其中进入乳汁的是分泌型（secretory）IgA，不会被消化。
真服了。。。
我知道疫苗里面是RNA，但是这个疫苗第一针打下去体内产生的抗体是IgM，第二针打下去产生的抗体是IgG，都不是IgA。
打完疫苗产生的抗体跟你说的母乳里面不会消化的抗体根本不是一种。你中文说的内容跟那段引用的英文也是两回事，因为根本不是一种抗体
废话，我说的是打完疫苗之后身体产生的抗体，跟那位说的乳汁里最多的不被消化的抗体根本不是一种
我也服了您了，您看我在4楼分享的paper了吗？里面写了会产生IgA啊？您是根据什么认为不会产生IgA的？
算了，浪费我时间。
哦，我只看到你回复的了。那很好呀，虽然很少，也比没有强。