All Questions
Tagged with antibodies covid-19
18 questions
5
votes
3
answers
418
views
What is the meaning of "co-formulated"?
I was reading the The right drug for the right patient section of the University of Sydney website, which provides these clinical guidelines (flow chart), and says (bold my own):
There are no studies ...
- 135
0
votes
2
answers
73
views
How much less effective are the antibodies produced against the Alpha-SARS-CoV-2 spike protein against the Delta-SARS-CoV-2 spike protein? [closed]
When viruses mutate and the surface of a protein changes that usually results in the antibodies that the body produced against an earlier form of the virus working less well. By what factor do ...
- 741
1
vote
1
answer
96
views
Antibodies and Immune system
I was just educated by my physician about some details of the differences between the qualitative and the semi-quantitative COVID-19 antibody tests. I understand now that the result of the semi-...
- 113
2
votes
0
answers
66
views
Do covid vaccines increase the risk of antibody-dependent enhancement?
A QAnon video which takes Nobel Prize winner Luc Montagnier's suspect claims about covid vaccination and multiplies them beyond recognition states that mass vaccination will lead to mass ADE, and that ...
- 133
0
votes
1
answer
43
views
Antibody test after vaccination with BBIBP-CorV
After vaccination with BBIBP-CorV (inactivated) which of the following tests can be taken to determine if the vaccine produced an immune response:
IgM for N protein
IgG for N protein
IgG for S ...
- 221
1
vote
0
answers
33
views
What protection does T-cell immunity confer for Covid?
This preprint, which was just released today, says that while some of the Covid-19 variants evade antibody immunity, they do not evade T-cell immunity. It says that this is true both of T-cell ...
4
votes
1
answer
109
views
Can this method of immunization for horses serve as a COVID-19 vaccine for humans?
A group of scientist developed Equine polyclonal antibodies (EpAbs) obtained after immunization of horses with the receptor-binding domain of the SARS-CoV-2 viral Spike glycoprotein.
https://ri....
2
votes
1
answer
131
views
False Positive PCR - COVID-19 and possible reinfection when antibodies value is +7.0
A friend of mine was detected COVID-19 positive through PCR one month back. He was asymptotic as per doctors and had no symptoms.
He quarantined himself and increased his intake of water.
After 1 ...
- 31
1
vote
0
answers
28
views
Is there any information on the lifespan of SARS-CoV-2 antibodies?
Like all cells, antibodies die off after a period of time. A human body may (or not) be able to efficiently replace or replicate these antibodies. Whether the original antibodies were generated ...
- 720
11
votes
1
answer
119
views
Can the specificity of a COVID-19 antibody test be improved by testing twice?
My question is fairly simple: There is a COVID-19 antibody test with a worst-case specificity of 98%, meaning that it yields potentially up to 2% false positives.
While that number is not bad it is ...
3
votes
1
answer
85
views
Why can't simple blood transfusions be used for treatment of COVID-19, instead of plasma transfusions? [closed]
It has been recently been shown that convalescent plasma from previously infected patients can be used to help others gain immunity against the disease. But why do we need to use plasma for this ...
- 1,496
1
vote
1
answer
79
views
What does it mean when someone has Coronavirus antibodies?
I'm a bit confused reading articles like this:
https://www.nytimes.com/2020/04/23/nyregion/coronavirus-antibodies-test-ny.html
One of every five New York City residents tested positive for antibodies ...
- 121
0
votes
1
answer
48
views
Ratio of PCR to antibodies positive Covid-19 tests in studies outside USA?
CNN reported:
Two studies involving antibody blood tests in California -- one in Los Angeles County and the other in Santa Clara County -- so far have suggested that the number of people already ...
14
votes
2
answers
5k
views
A cheap and easy inactivated vaccine for COVID-19
Suppose a person with COVID-19 coughs into a bag. Let the bag sit in the sun for, say, 72 hours -- so as to make the virus inactive.
Could a healthy person breathe in the inactivated virus from the ...
- 397
2
votes
1
answer
458
views
Do coronavirus antibodies give you any immunity?
According to Coronavirus antibodies may not make you immune, WHO warns
There is no evidence to suggest that recovered coronavirus patients and former asymptomatic carriers who have coronavirus ...
- 1,105
0
votes
1
answer
71
views
If COVID-19 binds to GRP78 could a GRP78 dose inactivate the virus?
This research found that the COVID-19 spike protein binds to the cell surface receptor GRP78.
If we could inject a large amount of GRP78 into patients could it saturate the virus particles, and ...
- 145
2
votes
1
answer
205
views
Are false positives from Cellex’s Coronavirus antibody test systemic?
The FDA just approved the first antibody test for the Coronavirus, made by Cellex. The test has a significant false positive rate though (see here). Now for a lot of tests, false positives can be ...
2
votes
1
answer
265
views
Is there a way to test for covid 19 after recovery?
I had symptoms that could have been corona symptoms last week. Unfortunately the testing capacity in my country (Germany) is not sufficient to test every person with symptoms at the moment, so only ...
- 123