Questions tagged [covid]

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1answer
32 views

Has anyone tried the petri dish experiment with and without mask but at the side?

There are quite a few videos and experiments online that show the benefits of wearing a mask by holding a petri dish in front of their face while talking, singing, coughing etc., once with a mask and ...
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1answer
59 views

What's the difference between mRNA and inactive virus vaccine?

If the techniques used in both vaccines are similar and if both use the spike protein approach, then how is the mRNA vaccine more effective than the other ones and more importantly how come it is also ...
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1answer
39 views

Does a vaccine reduce the contagion “efficiency”?

Note: I am specifically interested in the question in the context of COVID, but general information is welcome as well. If someone vaccinated still catches the COVID, is their capacity to infect ...
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1answer
110 views

Detection of primer dimer on RT-PCR?

I usually do RT-PCR test for covid-19. Curves for Patients and Positive CTRL mostly appeared at 20 to 25 Ct. Sometimes, there are some curves that emerge at the last 5 cycles. Some argue that they are ...
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0answers
95 views

Do COVID-19 vaccines produce more spike protein than natural infection?

The SARS-CoV-2 spike protein has been shown to be harmful on its own. However, a news article quoted an "expert" as saying The spike protein components of the vaccine are not produced in ...
4
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1answer
158 views

Is the covid-19 vaccine-induced copy of the protein spike also damaging cells?

In recent scientific articles, it has been discovered how the spike protein not only is a respiratory disease but also damages blood vessels cells directly, and is connected with higher risk of ...
4
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1answer
155 views

How many mRNA strands are in a single dose of the COVID-19 vaccines?

I realize there are several different mRNA vaccines. I would be happy to know the ballpark figure for any of them. As a follow-up, is it known about what percentage of injected mRNA strands are ...
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1answer
58 views

SARS-CoV - relative size of the spike protein

I was given the task of determining the percentage of the S-protein of the SARS-CoV relative to the total of its proteins from the attached image. However, I have been given no explanation of the ...
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1answer
56 views

Is the stuffy environment due to using masks all day, helping in spread corona virus in people?

I came across a research that stated, the most disease ridden place in a toilet is actually the air dryer. The hot and moist microcosm that develops around the dryer due to frequent use helps in ...
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1answer
72 views

Does the false positive covid-19 PCR % referred to by Surkova & Nikolayevskyy in The Lancet mean % of all tests, or % of positive tests?

In False-positive COVID-19 results: hidden problems and costs it is said: The current rate of operational false-positive swab tests in the UK is unknown; preliminary estimates show it could be ...
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1answer
68 views

Does stronger reaction to vaccine (fever, days of nausea) mean that an immune system would have reacted the same to the virus?

I have heard that the real danger of Covid-19 is the strong immune response. Is it more likely that a person's immune system would have reacted dangerously to the virus?
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174 views

Does vaccination lead to short-term secondary infection suceptibility?

For clarity, here is a summary of my question, per anongoodnurse's comment: Does a lower peripheral lymphocyte count resulting from recent immunization render us more susceptible to infection by other ...
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2answers
180 views

Can the spike protein created by the Covid mRNA vaccines be created independently of the human body, and is there a higher cost to that?

How different in principle is using the bodies own mRNA to create the coronavirus spike protein differ from other methods of using genes to manufacture other drugs or proteins and is there a cost ...
1
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1answer
59 views

Immunological factors for the cause of headaches following SAR-CoV-2/COVID vaccination

It is generally-accepted that headaches are a common side effect from receiving the COVID vaccine. Vaccine recipients with pre-existing immunity experience systemic side effects with a significantly ...
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0answers
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Why do the COVID vaccines contain the cationic lipids they do?

Why did Moderna & Pfizer specifically pick their SM-102 and ALC-0315 cationic lipids with tertiary amines, branched tails, long linker chains, and small hydroxyl head groups? Are the large tails ...
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2answers
169 views

Do the primers used for Covid-19 test work with all new strains?

We keep reading news of new Sars-CoV-2 strains, some of them allegedly able to evade vaccine-induced Igs. That's not unexpected, specially for a single-stranded RNA virus. However, it seems to me that ...
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1answer
60 views

Will Covid-19 wipe out the Humanity that we know of?

As there are multiple variants of Coronavirus and every couple of weeks later there are new, deadly and highly contagious variants of COVID-19 virus emerging from the backdrop, I am just wondering is ...
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0answers
69 views

How difficult is it to adapt an existing vaccine to a virus variant?

There is (at least in France) an ongoing discussion about the Astra-Zeneca vaccine which is perceived as "outdated" because of the prevalence of new variants (the vaccine was designed based ...
3
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1answer
96 views

Can spike protein induced cell fusion be triggered by the mRNA vaccine?

The mRNA-based vaccines cannot lead to COVID-19 or its symptoms since they only lead to the production of the spike protein in the cell. However, the spike protein itself can lead to cell fusion: ...
4
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1answer
361 views

How is SARS-CoV-2 'deactivated' for some Covid vaccines (for example Covaxin)? [closed]

Some Covid vaccines like Covaxin employ a 'Whole-Virion Inactivated Vero Cell'. How is the virion 'deactivated' for the vaccine?