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Message: <blockquote data-quote="Bad_horse" data-source="post: 26382321" data-attributes="member: 577456">There are few types of antibodies. IgG is the main and most common type which will release after immune system get activated by presence of spike protien in the blood. Then T cells get activated and provide sufficient antibodies quickly due to immune memory induced by vaccination. ( vaccination cause rise in IgG, IgM and IgA tyoes) In order to happen that virus has to go up untill alveoli where there are immune cells like macropages or release in to the blood. But there is a another antibody type IgA which is located on mucous membranes. So it can bind to virus at the respiratory route before entering in to a cell. I told that according to my knowledge. So its entirely theoritical I don't know whether there is enough IgA antibody level in mucous to cause this. Few viruses can escape depending on the viral load. And there is ACE receptors even in the nasal epithelium, and lots of other tissues (reason for long covid)<hr />Yeah I saw that later<img class="smilie smilie--emoji" loading="lazy" alt="😅" title="Grinning face with sweat    :sweat_smile:" src="https://cdn.jsdelivr.net/joypixels/assets/6.6/png/unicode/64/1f605.png" data-shortname=":sweat_smile:" />. Vaccine anxiety------ Post added on [DATETIME="UT"]1620386267[/DATETIME]</blockquote>

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