Questions tagged [coronavirus]

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1answer
78 views

Will the COVID-19 virus ever stop mutating into new variants? [closed]

I am curious to know if it has been discussed within the medical community as to whether the COVID-19 virus will ever stop mutating into new variants, and if it has been discussed, what is the ...
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Vaccine death efficacy calculation and how it works

I am no medical expert, am just curious how vaccines work in general, especially in preventing severe illness and deaths. I have read articles, seen videos on youtube, and seen how efficacy is ...
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COVID-19 exposure risk from passing joggers versus walkers

What is the COVID exposure risk from passing close by someone who is jogging relative to passing close by someone who is walking? The reason I ask is with regard to going out for exercise, or to run ...
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1answer
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Why US (3 weeks)and UK ( 8 weeks) covid vaccine guidelines differs so much?

I read two differing opinions about corona, one from CDC that says get your second shot as close to the recommended 3-week or 4-week interval as possible Other from BBC UK, that says Covid vaccine: ...
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1answer
26 views

Can lung imaging uniquely identify coronavirus-induced pheumonia?

How reliable are radiographic, CT and ultra-sound appearances of coronavirus in the lungs in terms of their sensitivity/specificity? A bunch of imaging labs popped up in my town recently, all of them ...
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CDC close contact definition - why masks addressed only in K12 setting?

CDC defines close contact as Someone who was within 6 feet of an infected person (laboratory-confirmed or a clinically compatible illness) for a cumulative total of 15 minutes or more over a 24-hour ...
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46 views

What is the state of transmissible vaccines?

I was thinking about viral gain of function research -- and firebugs playing with matches -- when it hit me: if a highly contagious, but harmless version were engineered it could outcompete more ...
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1answer
65 views

How effective is sinovac/sinopharm vaccine

it's time for me to get vaccinated with sinovac vaccine. I am actually a little bit nervous, about its effectiveness, I am not a docotor and I have no idea what's behind it. I am worrying that it ...
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When speaking of vaccine efficacy (for COVID-19, or other), is immune response or efficacy really being measured? [duplicate]

I've been performing many web searches using combinations of the words "vaccine", "vaccination", "COVID-19", "coronavirus", "efficacy", and "...
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Is there evidence that vaccine-related blood clots could be due to injection technique?

Recently, Danish health authorities including Denmark's SSI issued new guidelines for intramascular vaccination to be done with aspiration, in case some of the vaccine-induced blood clot cases are due ...
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What are the "theoretical risks" of COVID vaccines in mothers

In Germany, there is no official endorsement of COVID mRNA vaccines for pregnant women and nursing mothers due to a lack of study data. Still, professional societies generally recommend considering ...
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Are coronavirus-like spikes only seen in viruses?

Are there any natural proteins or cells (or anything) made by the human body with spikes like those of Covid-19? I know that there have been no serious side effects reported from the Covid-19 vaccine, ...
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How accurate is the individual number covid-19 variant cases in each state?

How accurate is the individual number of covid-19 variant cases in each state? US COVID-19 Cases Caused by Variants I am trying to estimate the risk of being exposed to the one B.1.351 variant where ...
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259 views

Can COVID-19 vaccines cause birth defects?

Have regulators historically allowed enough time for Phase 3 trials to show that a vaccine does not cause congenital defects? Are they making an exception for Covid vaccines? Because the Pfizer/...
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How does the type of syringe impact the number of doses of Corona vaccine available per vial?

In an interview with Ron Klain (Biden's Chief of Staff) on CNN this morning, it was suggested that Biden would invoke the National Defense Production act to increase the production of syringes that ...
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1answer
65 views

What are specific effects of a loss ACE2 functionality caused by COVID-19?

ACE2 protein on the surface of lung epithelial cell and and other cell types is a homologue to ACE which is popularly as the target protein/enzyme of blood pressure medication ("ACE inhibitors&...
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If HCoV-NL63 also binds to ACE2 (like SARS and SARS-CoV-2) why doesn't it cause a more severe disease (on one hand) or a pandemic (on the other)?

By all accounts the "common cold" virus HCoV-NL63 although much further away (genetically) from SARS and SARS-CoV-2 it actually uses the same ACE2 receptor for entry (or at least the S1A ...
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2answers
440 views

Why is the new mRNA vaccine unable to modify human DNA?

One of the most common worries expressed against the new coronavirus vaccine is that, supposedly, injecting mRNA into a cell has the potential to alter the human genome. I am constantly bombarded by ...
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COVID-19 Variants

I have been looking at this "new variant" of the virus which causes COVID-19 and the British Medical Journal has said What do we know about this new SARS-CoV-2 variant? It’s been snappily ...
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Have there been vaccines in the past, which revealed side effects only after extended periods of times? [duplicate]

Obviously we don't have precedent for mRNA vaccines like the now available SARS-CoV-2 vaccine from German-American Joint Venture Biontech/Pfizer. But how about the other, more conventional vaccine ...
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Can an individual who has had a covid-19 vaccination test positive and is that a problem?

Can an individual who has had a covid-19 vaccination test positive and is that a problem? Up to now and for some time to come, testing has been important to help control the spread of this disease. ...
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1answer
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Is repirator easier to breathe through than conventional medical mask?

Currently I'm using conventional blue mask. But there are masks with exhale valve (there are mostly FFP2 ones and they're cheaper, I'm considering to buy one, for COVID protection). I didn't try such ...
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UK - Sweden Covid-19 Comparison

I compared Covid-19 data on the 17th of October 2020, using this source: https://coronavirus.jhu.edu/map.html UK population = 66650000 Uk cases = 708297 UK deaths = 43669 66650000 / 708297 = 1 ...
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How effective are reused surgical masks?

Let's say I have used a surgical mask multiple times. And say I left it on a safe place, untouched, for three days which is the longest that viable SARS-CoV-2 has been found on different materials (...
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Are COVID-19 patients infectious even if test results are negative?

With Covid-19, are people infectious in the first days after infection before they test positive on a Covid test? I have learned that Covid-19 tests are ineffective in the first few days after being ...
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What is the statistical power required for COVID-19 vaccine trials?

Clinical research selects the number of subjects under treatment based on desired statistical power (i.e. the probability of rejecting the null hypothesis when the null is in effect false, given a ...
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1answer
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What happened to Solidarity?

Solidarity is a large clinical trial of treatment candidates for COVID–19, organised by the World Health Organisation (WHO). The relevant page on the WHO website—last updated on July 6, 2020—says: The ...
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1answer
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How many of those exposed to COVID-19 get infected?

Statistically, from 100 people exposed to the coronavirus that causes COVID-19, how many get infected? Say for example in the USA. Since they talk about exposed people, then such cases should be ...
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corona virus vaccine side effects [closed]

First I like to mention that I have no medical background I have read that there are 2 types of vaccines for the corona virus currently developed A RNA based vaccine, which is based on a novel ~...
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1answer
103 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....
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1answer
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Do presymptomatic people test PCR-positive

I know that RT-PCR testing can detect coronavirus in symptomatic and asymptomatic carriers. I was wondering whether a presymptomatic carrier (I don't know if the terminology is correct, but I mean ...
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2answers
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How would we run experiments to determine the prevalence of aerosol COVID19 spread (long time and long distance) versus droplets?

The droplets vs aerosol debate for COVID19 is heating up. WHO has revised it's aerosol evidence review here: https://www.who.int/news-room/commentaries/detail/transmission-of-sars-cov-2-implications-...
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How accurate are dogs to detect whether a human has COVID-19?

I read on https://www.businessinsider.com/sniffer-dogs-answer-to-the-covid-19-testing-crisis-mirror-2020-4: Medical detection dogs able to sniff 750 people an hour could help identify coronavirus ...
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Can SARS-CoV-2 possibly overcome herd immunity without mutation in densely populated countries and places? [closed]

Can the coronavirus that causes covid-19 possibly overcome herd immunity without mutation using immune individuals as hubs till it reaches vulnerable individuals in very densely populated countries ...
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Can Lysine supplement increase immunity against corona viruses? [closed]

Can high doses of Lysine as a supplement or from a natural source (e. g. drinking 1-2 letters of yogurt daily) increase immunity against corona viruses? What about a combination of Lysine and an A-Z ...
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1answer
70 views

Is there data on the effectiveness of masks for preventing COVID-19 transmission in outdoor settings?

In the COVID-19 pandemic, many jurisdictions are now requiring that masks be worn in public, often including both indoor and outdoor settings. However, many sources (including widely cited preprints ...
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How did COVID-19 jump the species barrier?

I am not a medical professional. I also do not have enough knowledge on medicine or biology. But I have been wondering a lot about one question in particular for some time: How did COVID-19 jump the ...
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1answer
108 views

How long does coronavirus stay alive on home floors?

I'm not saying that the floor is wet. But I feel even when our shoes or dry, it can carry virus with it and may get attached to floors. If this happens, how long it can stay on the floor tiles of a ...
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53 views

Will preventive measures of COVID-19 pandemic ever lessen to a great extent in the most parts of the world? [closed]

People always say in hard times that "this too shall pass". Is it right for COVID-19 pandemic (please see what I mean by pandemic here. My English is a bit weak so this word might not be ...
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1answer
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For the people who are treated with interferons, does this provide them extra protection against corona virus?

It is known that interferon inhibits the viruses replication process. At the same time, they don't give it to people with COVID-19 because we don't want the flu-like symptoms to get worse. How about ...
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How to disinfect ice cream from coronavirus?

It is well known that some ways to remove coronavirus from food are: washing/cleaning it carefully; heating it (e.g. in oven, microwave or a saucepan), at least 70 degrees for at least 5 minutes; ...
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1answer
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Epidemiological characteristics of SARS-CoV-1

SARS-CoV-1 and SARS-CoV-2 seem very similar in terms of their nature and the way in which they entered the human population. SARS-CoV-1 appears to have been driven to extinction, but SARS-CoV-2, which ...
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1answer
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Does COVID 19 hospitalization really helps? or not at all? [closed]

So I wanted to ask, given that most governments imposed quarantine in order to reduce risk of infection and/or not to overwhelm hospitals capacity, I wanted to know if it really makes a difference in ...
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1answer
70 views

Why handwash should last for 20 seconds or more?

General WHO recommendation says that handwash should last for 20 seconds or more. Why not 15, why not 30? What could be the biological relevance of the recommended time period?
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Why is the reported number of COVID-19 deaths lower on Sundays and Mondays in the US?

I was looking at the Daily Deaths from COVID-19 from Worldometers and I noticed that the number is always lower on Sundays and Mondays. Why is that? Am I interpreting the graphs correctly?
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Doctor giving nurse advice its okay to visit family during COVID19 pandemic - Is this safe? [closed]

My sister is a nurse in Labor and Delivery and for the past 3 months we have advised her to stay away from our parents (60 and 61) due to the potential risks with COVID-19. Recently the lead doctor ...
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1answer
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Could suppressing your cough help fight a viral infection like COVID-19?

We know that viral infections colonise the body by reproducing inside of target cells, then releasing the viral payload when the cell dies, which goes on to infect more target cells. We know that a ...
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Have any conclusions been made regarding the interaction of Covid-19 and ACE inhibitor medications? [duplicate]

About two months ago, I started to see articles appear regarding the potential interactions between ACE inhibitor medications (commonly used to treat high blood pressure) and the severity of Covid-19 ...
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1answer
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How effective is eucalyptus-based treatment for curing COVID-19 (or coronavirus in general)?

According to The Jakarta Post, (Indonesia's) Agriculture Ministry claims to have developed eucalyptus-based COVID-19 treatment: The Agriculture Ministry has developed a eucalyptus-based treatment ...
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1answer
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What information we have about transmission of COVID-19 in detail?

A lot of information we have how the COVID-19 virus spreads in general. But what do we know about the detected and proven way of transmission: about which items (door handles, plates, salad bar, ...) ...