The 2 types of antibodies

I'll post a little info, but for those in know, please add to it. And thanks

1. IgG : All body fluids contain the IgG antibody. Between 75 percent and 80 percent of the antibodies in the body are IgG, yet they are the smallest. They are vital in warding off both bacterial and viral infections. IgG antibodies are the only antibodies that may pass through the placenta in pregnant women to protect the fetus.
2. IgM : IgM antibodies are the largest antibody, accounting for 5 percent to 10 percent of antibodies. They are found in the lymph fluid and blood. IgM antibodies are the first line of defense when an infection is detected. They help stimulate the immune system to combat foreign substances.

OK, like I said, someone who knows this should help me along here, but

the Igm is natural and for a short period can fight off the corona virus

the IgG (if you have the corona virus, then you have the IgG the next time you are infected , something about it disappearing (sorry I don't know what this actually means)

the break down of the antibodies are something like this
1. the good
2. ones that if you have aids, they won't help
3. one that increases the virus (something like that )
(the above is translated quickly from Japan to English while on TV in Japanese daytime news) very difficult

Something about the IgG becomes the the antibody after you get the virus

Hopefully someone can come along and add to this.

Antibodies are tailored to tackle specific antigens on a one-to-one basis. Antibodies are the first line of defence in the immune system and not the be-all and end-all.

IgM are antibodies produced immediately after an exposure to a disease, while IgG refers to a later response and confers immunity against that particular disease.

If you don't have IgG then your immune system has no immediate way to fight off an infection e.g. Covid-19. Your body will produce IgM as its response to the new infection and if you survive will have created immunity for the future. That is to say, your body will be immune to future Covid-19 infections because you will have IgG antibodies.

Does that help?

Would that explain cases of recovered patients testing positive ?
IE the presence of Covid19 specific antibodies providing a false positive

originally posted by: paraphi
Antibodies are tailored to tackle specific antigens on a one-to-one basis. Antibodies are the first line of defence in the immune system and not the be-all and end-all.

IgM are antibodies produced immediately after an exposure to a disease, while IgG refers to a later response and confers immunity against that particular disease.

If you don't have IgG then your immune system has no immediate way to fight off an infection e.g. Covid-19. Your body will produce IgM as its response to the new infection and if you survive will have created immunity for the future. That is to say, your body will be immune to future Covid-19 infections because you will have IgG antibodies.

Does that help?

Also, due to its instability due to interruption to normal transcription error detection/correction mechanisms by the process of recombination, the virus is likely to mutate significantly between 'seasons' of infectious bouts.

In that case, our immune responses may need re-training to recognize the mutated forms.

Fortunately our bodies' immune responses look for a variety of surface features of the virus, especially in the receptor binding domain where the mechanism that the virus uses to breach the cell wall, resides. If there is too much mutation to this mechanism, the virus will be unable to penetrate the cell and so will die out without replication.

originally posted by: Pilgrum
Would that explain cases of recovered patients testing positive ?
IE the presence of Covid19 specific antibodies providing a false positive

Yes, antibody testing does not identify if the virus is still 'live' in the host or if it has been 'defeated'.

Also, like anything in real science, there is a certain margin of error.

a reply to: paraphi

thank you
glad I brought up this post

This is from my very layman understanding of our immune system. The first responder they go and map the intruder fight it on site and try to keep it in check, while the information is transfered to the central where specialised antibodies are produced according to the information gathered from the first responder. This second line will kill the intruder anytime it wants to enter again and basically makes you immune to that specific intruder...
Viruses compared to per example bacteris, mutate very quickly, that's why we get a new flu (influenza) every year, and the vaccination is basically a joke(not for the pharmaceutical industry though).
stay healthy NC

I’d be interested in knowing this too ..:::I think I read here in ATE that the antibodies left behind from the virus , act like a welcome committee for the virus if it comes Back around again . The second time , it Will let the virus into your immune system instead of fighting it . And that is when more damage is done .

so the news said the antibody testing will be available starting this week. And if you have antibodies you can go back to work. But you can still be infecting people because the test cant differentiate between someone who had or currently has it? a reply to: chr0naut

originally posted by: HODOSKE
so the news said the antibody testing will be available starting this week. And if you have antibodies you can go back to work. But you can still be infecting people because the test cant differentiate between someone who had or currently has it? a reply to: chr0naut

Yes. They then have to see if you have, or have had, symptoms and then from there calculate if you have had sufficient time to overcome the virus.

originally posted by: Meldionne1
I’d be interested in knowing this too ..:::I think I read here in ATE that the antibodies left behind from the virus , act like a welcome committee for the virus if it comes Back around again . The second time , it Will let the virus into your immune system instead of fighting it . And that is when more damage is done .

No. Definitely not true. The virus has no antibodies. It IS the antigen. Your body produces specific antibodies to specific antigens (in this case the viral protein) --- as was explained earlier, some on initial exposure and then others for long term protection. None of the antibodies 'help' viruses. They bind to the virus preventing the virus from binding to your cells and identifying it as an intruder to your immune system.