That's when the surface of the antibodies basically have to fit the shape and surface of the virus, almost like a jigsaw. Weirdly I remember having an issue of new scientist years ago, and they had a picture of a virus cell, it looked like a hexagon with legs. It's pretty crazy to think how much our bodies are able to do at a cellular level.
Yeah they are all from the same "family" of virus, so hopefully we can get some form of immunity for a range of them. By the sounds of it the mRNA style of vaccines should help a lot in that aspect compared the type of vaccines currently in use. 🤞🤞🤞
Yeah the B cells present a specific antibody on their surface, then when the antibody on the B cell comes into contact with the antigen/virus, the B cell generate lots of antibodies and spews them out.
Yes I've heard that people who had the original SARS, and even people who've had the MMR vaccine could have some cross immunity to SARS-COV 2.
From what i've seen, I think either having covid19 or the vaccine will probably give long term immunity. It could also give cross immunity to the next SARS Cov virus that comes along. Hopefully anyway!