Questions tagged [coronavirus]

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1answer
246 views

Is the CDC's reported drop today in COVID-19 cases by date of diagnosis meaningful?

I was waiting with bated breath for the CDC update on cases of COVID-19 in the U.S. by date of onset. To my eyes this looks like absolutely wonderful news - that it means that the exponential growth ...
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1answer
176 views

Using decoy proteins to treat viral illness

As a non-biologist, my understanding is SARS-CoV-2 uses it spike protein to latch on to the ACE2 receptor on cells in order to inject its genetic material into the cell. Questions: What would happen ...
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How is someone being tested positive for corona virus? [duplicate]

How is it determined that someone is infected with corona virus ? It is my searching for matching DNA sequences of the virus in our cells or is their some other way.
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2answers
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Can stomach acid destroy a virus?

I was reading about a viral list of dubious coronavirus tips on The Verge and reached this tip: “Even if the virus gets into your mouth, drinking water or other liquids will wash them down ...
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3answers
16k views

What's the evidence against SARS-CoV-2 being engineered by humans?

A couple of colleagues suggested in a discussion that the virus that causes COVID-19 appears to be made by humans, since nature could not have produced such an efficient virus — that spreads so fast ...
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1answer
241 views

What percentage of individuals infected with COVID-19 don't have symptoms?

There are various statistics estimating mortality of COVID-19 infections, based on how many diagnosed people have died. These numbers are used by various media to extrapolate how many people will die ...
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58 views

How does increased relative humidity change the airborne survival rate of coronavirus COVID-19?

I would like to make some HVAC recommendations in my community to assist in slowing the eventual spread of coronavirus COVID-19. Some recommendations are obvious like properly maintained HEPA ...
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3answers
18k views

Ratio of bleach to water required to disinfect COVID-19?

I am confused about the needed ratio of bleach to water required to disinfect COVID-19 from surfaces. The guide on CDC states that: https://www.cdc.gov/coronavirus/2019-ncov/community/home/cleaning-...
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80 views

Could total 2020 flu deaths be low due to Covid19 countermeasures?

A working assumption is that Covid19 countermeasures will also reduce seasonal flu transmission and mortality. Could this effect be so large that the 2020 total global deaths from both causes will be ...
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1answer
185 views

Role of Prevalence in Estimating Coronavirus Mortality

Let there be a sample of 10,000 people. 100 of them have a fever. You test them for COVID19 and they all come out positive. 5 of them die, 9 of them end up in intensive care. The estimated mortality ...
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2answers
851 views

Human Immune Response to COVID-19 Virus

I have tried to find an answer to this but have not found anything after multiple attempts. The question on the table is if the human body is able to produce an immune response to the COVID-19 virus ...
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1answer
42 views

Poor Hygiene vs. Cross-species transmission?

Did a poor hygiene at wet Chinese markets add anything to equation to trigger critical mutation of COVID-19 helping it to transmit the virus from bats/pangolins to humans? If not, would it spread to ...
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3answers
161 views

Do Angiotensin II Receptor Blockers (ARBs) or other factors control the level of ACE2 expression? [coronavirus receptor]

Because ACE2 is used by SARS-NCoV-2 to enter the cell, I am curious what factors determine its expression. Interestingly, myocardial infarction increases ACE2 expression in the heart in an animal ...
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1answer
8k views

How many times has SARS-CoV-2 mutated?

According to Coronavirus has mutated at least once The novel coronavirus that has infected thousands of people across the world may have mutated at least once — meaning there may be two ...
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131 views

How do viruses die outside of host cells? [duplicate]

I am posting a question that a friend of mine has asked. My friend wrongly assumes that SARS-CoV-2 virus can be transmitted through blood, although there is no such evidence. However, his question ...
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1answer
871 views

Is COVID-19 claimed to get less deadly over time? If so, why?

From a TV news report of a press conference from (I think) the German Robert Koch Institute, I remember hearing an expert declare that he was expecting COVID-19 to get less deadly over time. ...
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1answer
7k views

Does the genetic sequence of SARS-CoV-2 end with 33 A's?

Looking at the DNA (or RNA?) sequence of the Covid-19 virus here: https://www.ncbi.nlm.nih.gov/nuccore/MN908947.3 I notice it ends in 33 a's. Does the virus really look like that, or is it some ...
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1answer
721 views

Can coronavirus contaminate public water systems? [closed]

It's been reported recently that people are panic-buying stuff as the coronavirus epidemic worsens. I've even noticed that the local grocery store is low on hand sanitizer, paper towels, and bottled ...
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1answer
6k views

What is the size (diameter) of the SARS-CoV-2 virus?

You can easily find a lot of pictures of the SARS-CoV-2 virus. But although it should be trivial for an electron microscope to measure the size, I am not able to ...
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1answer
148 views

Is it possible to artificially induce a 40°C fever in a controlled and safe manner? [closed]

In search for any possible new treatments for COVID-19, I am of the understanding that the SARS-nCoV-2 virus may suffer deterioration at high temperatures and high humidity, to perhaps weaken it ...
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0answers
159 views

Paper shows 2 hours of high humidity and hot temperatures kills corona virus, does this stop the spread of the virus?

I found this paper (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2863430/) which says these corona virus strains live for months at 4 degrees C, 20% relative humidity. But at 40 degrees C and 80% ...
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141 views

How does a virus stick to a non-biological surface?

Recent events has triggered an renewed interest in understanding how a virus is able to stay on a surface. For sake of argument, let's assume we are dealing with a Corona-type virus. One can then ...
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3answers
23k views

How does a Coronavirus “test kit” work?

A number of countries are using test kits for detecting new cases of nCoV (2019-Coronavirus) and apparently China is running low. What exactly is in a nCoV "Test Kit" — How does it work? (Surely ...
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1answer
3k views

Why would a 2019-nCoV protein sequence in the NCBI database match a protein submitted in 2018?

There seems to be a bit of a conspiracy theory brewing over some data in the NCBI database, and I don't have the necessary knowledge to make sense of it. It basically goes like this: Go to NCBI ...
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1answer
1k views

What are the environmental conditions for SARS-CoV-2 to survive?

What do we know about the environmental limits for nCoV to survive outside the body? For example, in: In open air On surfaces In water What are the limits for temperature, humidity and air pressure,...
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0answers
140 views

How was 2019-nCoV (Wuhan coronavirus) identified so quickly?

It seems that from the first few cases to identifying 2019-nCoV as a new disease happened very quickly. How were they able to identify this as a new disease and not an outbreak of a previously known ...
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2answers
206 views

Can Coronaviridae mutate into something as dangerous as Flioviridae? [closed]

Can coronaviruses mutate to an extent to get as dangerous as fliovirusues such as Marburg viruses, Ravn or Ebola Zaire?
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2answers
334 views

How do bats survive their own coronaviruses?

How do bats survive their own coronaviruses (without showing any symptoms)? Or, more generically, how can viruses keep reproducing inside healthy carriers without inducing any pathogenic effect? Are ...
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2answers
654 views

Why are bats the source of dangerous coronavirus pandemics?

Why do coronaviruses come from bats? I mean, why precisely coronaviruses and not (for instance) herpesviruses? It looks like bats host more zoonotic viruses (per species) than rodents, although they ...

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