This Thread Blows - C19 and beyond

I haven’t really been following along in this thread so if this has been touched on already, just ignore...

My buddy had a confirmed positive case in late March. He had also been donating convalescent plasma which confirmed he had antibodies. Anyway, according to an antigen test he had in late November he no longer has useful antibodies. Based on that one example, it seems antibodies could last about 8 months.

He believes he may be infected again, currently.
 
Tim said:
I haven’t really been following along in this thread so if this has been touched on already, just ignore...

My buddy had a confirmed positive case in late March. He had also been donating convalescent plasma which confirmed he had antibodies. Anyway, according to an antigen test he had in late November he no longer has useful antibodies. Based on that one example, it seems antibodies could last about 8 months.

He believes he may be infected again, currently.
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I may have gotten it twice, although I didn't get tested to confirm the second time. Same though, had it in March, had antibody test, got sick in December with similar symptoms as round 1.
 
Tim said:
I haven’t really been following along in this thread so if this has been touched on already, just ignore...

My buddy had a confirmed positive case in late March. He had also been donating convalescent plasma which confirmed he had antibodies. Anyway, according to an antigen test he had in late November he no longer has useful antibodies. Based on that one example, it seems antibodies could last about 8 months.

He believes he may be infected again, currently.
Click to expand...
When I got confirmation of a positive test in early Dec, was told immunity only lasts about 3 months.
 
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Patrick said:
@rick81721 - is this one of the "not peer reviewed" yet papers?

jamanetwork.com

SARS-CoV-2 Transmission From People Without COVID-19 Symptoms

This decision analytical model assesses the proportion of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmissions in the community that likely occur from persons without symptoms.
jamanetwork.com jamanetwork.com

Results The baseline assumptions for the model were that peak infectiousness occurred at the median of symptom onset and that 30% of individuals with infection never develop symptoms and are 75% as infectious as those who do develop symptoms. Combined, these baseline assumptions imply that persons with infection who never develop symptoms may account for approximately 24% of all transmission. In this base case, 59% of all transmission came from asymptomatic transmission, comprising 35% from presymptomatic individuals and 24% from individuals who never develop symptoms. Under a broad range of values for each of these assumptions, at least 50% of new SARS-CoV-2 infections was estimated to have originated from exposure to individuals with infection but without symptoms.
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Looks similar to other models (note not a study but another model using multiple assumptions) - still shows asymptomatics are less likely to transmit covid, since there are more asymptomatics.
 
like most things with this, they just don’t have another data. My parents had covid over the holidays and we are currently trying to figure out if we are going to see them.
JDurk said:
Good question. Will have to refer to CDC website.
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rick81721 said:
Nope. Well except if the vaccine doesn't work for you
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Thats what I thought and read too. Ive since learned that it isnt quite that cut and dry, my bad for being medically dogmatic in earlier posts. There are pharm fudge factors that are now being published; "the vaccine is 94% effective against coronavirus, and 100% effective against a severe case of coronavirus". After vaccination, there are no cases of death from covid so far. It is unlikely but possible to be infected, carry and shed the virus after vaccination. The research is unclear if thats just the 6% not immune or a larger percentage. Is the possibility of transmission of COVID from an infected vaccinated person just during the initial phase after injection but before Immunity? Is it after the effectiveness of the vaccine wanes or does subclinical infection and shedding remain a constant possibility? Not enough data to date. Should be a very small number in any event, but thats almost a WAG.

Although the phase 3 clinical trials are designed to determine whether vaccinated individuals are protected against disease, it will also be important to understand whether vaccinated individuals are less likely to transmit the virus. This is likely but not ensured. If a vaccine not only protects against disease but reduces transmission, and continues to do so for many years, we are likely to reach a state of herd protection when masks and physical distancing will no longer be required. Herd protection is achieved when a sufficient proportion of the population is made non-infectious through vaccination or natural infection so that the likelihood of an infectious individual transmitting to a susceptible individual is very low. - https://coronavirus.jhu.edu/vaccines/vaccines-faq
 
rick81721 said:
. More on post-infection immunity

https://timesofsandiego.com/tech/20...vors-have-long-term-immunity-to-re-infection/
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The question I have relating to the above. Of the 20 million plus that have been confirmed infected. Why hasn't a more sustantial antibody study been done. say take 10,000, 100,000 previously infected people (with a cross section of blood types etc). Then have them take antibody tests, every month there after. That way a better analysis of post infection immunity duration can be arrived at.

Again this is important information to know. As the same questions will come up with the vaccines.

Additionally, you have some entities stating that they willl want a vaccination certification, to go to events, fly etc. Where that goes who knows. Where is the consideration for previously infected people in that discussion.

Just some questions
 
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HenryK said:
The question I have relating to the above. Of the 20 million plus that have been confirmed infected. Why hasn't a more sustantial antibody study been done. say take 10,000, 100,000 previously infected people (with a cross section of blood types etc). Then have them take antibody tests, every month there after. That way a better analysis of post infection immunity duration can be arrived at.

Again this is important information to know. As the same questions will come up with the vaccines.

Additionally, you have some entities stating that they willl want a vaccination certification, to go to events, fly etc. Where that goes who knows. Where is the consideration for previously infected people in that discussion.

Just some questions
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Lack of direction.

It's the same reason we don't have a national test on the effectiveness of masks, and types of masks to provide true direction to the public on what, or what not to wear and the resulting confusion and possible ineffectiveness of mask wearing.

The military went on a spending spree this year because they had funds they didn't know what to do with. I'm sure they could have been directed to do a thorough scientific study just as they do for other equipment.

Without the antibody tests, we don't truly know where we are as far as infections and we'll be wasting a lot of vaccines on people with antibodies.
 
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