Questions tagged [virus]

For questions about how viruses influence your health. General questions about viruses are off-topic but might be asked on Biology Stack Exchange; for questions about computer viruses, try Super User or Security Stack Exchange.

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Is it possible that a person has coronavirus if he only has difficulty breathing?

I have been suffering from difficult breathing for about 20 days now. It ranges from low to medium and the past few days it became almost permanent. I am afraid of going out and doing the test because ...
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Does the virus causing COVID-19, the Coronavirus SARS-CoV-2 stop being infectious when it is dry?

There are studies about the persistence of the SARS-CoV-2 virus on surfaces. The purpose of the studies is to find out how long a surface keeps being a risk to people. As far as I understand, it is ...
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Is there a virus from which humans can recover, but which doesn't grant long lasting immunity?

Prior to the SARS-CoV-2 epidemic I was under the impression that viruses fall into two categories: Diseases from which you recover and afterwards become fully immune. When reinfected with a mutated ...
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How do we know that the Spanish flu was an influenza? [closed]

Many diseases of the respiratory tract present as having “Flu like symptoms” how do we know that the 1918 Spanish flu was a strain of influenza and not some virus with similar symptoms?
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I have following questions on Corona Virus (Covid-19) and give solutions for them!

I have following questions on Corona Virus (Covid-19)? 1. How long can it stay on Air 2. Will corona virus be on roads and can get to our Foot or shoes? 3. Can we get it from Fruits, Veg / ...
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Efficiency of age-dependent and geographical quarantines?

Most western countries let young people transmit the virus slowly over a period of 1-2 years while keeping the economy in lockdown and letting the old and frail people shop and work together. That ...
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Is it possible that COVID-19 virus exist in a human body, but be absent from samples taken from nose and back of throat?

As specified in this link, COVID-19 tests start with taking samples from the nose or back or throat of people. Based on growth rate of this disease, I thought what if those samples are not positive (...
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Is it possible to get Covid-19 and have 0 symptoms along the complete journey and hence cure by yourself without knowing?

In this link, in the section How long is it between when a person is exposed to the virus and when they start showing symptoms? mentions Recently published research found that on average, the time ...
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What is the main way COVID-19 spreads?

Reading numerous news articles about COVID-19, I got confused as to what is its main transmission route. In particular, I am confused as to whether it is direct landing of respiratory droplets in ...
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Is it less likely to get infected by a second virus while fighting first?

By and large, when a person gets ill with eg. flu, it is sort of assumed at least by many people with no medical background in my vicinity, that the person won't get infected by another virus meantime....
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How can I convert mutation rates into number of infected people?

Yes, the question sound strange. But the fact is that mutation rate, μ, is of often measured in terms of substitutions per nucleotide per cell infection, written as "(s/n/c)". So if I have a ...
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Does bleach have to be diluted to be more effective to kill virus?

This page Bleach claims Bleach is more effective at killing germs when diluted than when used straight out of the bottle. this other page (Spanish) Alcohol and Bleach are more effective against ...
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How likely is it to develop pneumonia as a result of COVID-19?

The severity of n=44,672 confirmed COVID-19 cases in Mainland China as of February 11, 2020** as a result of the SARS-CoV-2 (previously 2019-nCoV) virus is as follows: 81% mild (assumed: no ...
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Does exposure to less than the Minimum Infective Dose act as a vaccine in some cases?

I know that there's no immune response/adaptation of some (relatively) new viruses like HIV for which it's estimated that it would take at least 32,000 years for humans to develop a non-pathogenic ...
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Why Covid-19 might end until September-October in Mexico?

This link was published ~8 hours ago https://www.razon.com.mx/mexico/epidemia-septiembre-pico-agosto/ (spanish) mention this The Undersecretary of Prevention and Health Promotion, Hugo López-Gatell,...
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Why don't we use complete white medical suits to have full protection instead of only masks?

If Covid-19 can float in the air over particles and be there for up to 3 hours (1:50 minute), and if the virus could get into your system through eyes, nose or mouth (See Spread from contact with ...
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Can this product kill coronavirus?

I'm really really confused what product to buy to clean my laptop body to disinfect it from coronavirus. Like most doctors say use 60-70% alcohol based sanitizers to clean your hands. So does it ...
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Confusing COVID article - Why would keeping the doubling time above the incubation period flatten the curve?

I stumbled upon this boiled down news article which makes the statement that if we get the doubling time for coronavirus cases above the incubation period (5.8 days), we will be able to effectively "...
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Back in 2005, the CDC successfully recreated the 1918 Spanish Flu virus and then published its research. Was this unwise? [closed]

From doing research on the COVID-19 virus, I discovered this morning that back in 2005 the CDC successfully recreated the 1918 Spanish Flu virus: "In a joint statement today, the directors of the CDC ...
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Why recovered patients develop lung disease due Covid-19?

In this link https://www.dw.com/en/covid-19-recovered-patients-have-partially-reduced-lung-function/a-52859671 we can see Now researchers in Hong Kong have said that recovered coronavirus ...
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Study type/design used in an coronavirus article?

I came across an article given here While I was reading the article, I wasn't able to find the study type/ design? Can you please help me find out what is the study design/type here? Meaning we ...
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Viral outbreaks and increased electromagnetic radiation [closed]

I recently heard this YouTube video about how we seem to have a viral pandemic every time a new mode of electrical communication is introduced. The guy in the video said that every time there is a big ...
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What is the realistic expectation of isolation and containment of people for covid-19?

Let's say one country or a region could take action to contain the corona virus (eg: South Korea, Wuhan China). How could they remain protected while other countries or regions still have the virus? ...
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If I get covid-19, can I get cured by myself?

Suppose I get infected by covid-19. I am a healthy person but with weight issues, according to the standard weight tables. Can my immune system cure me by itself? That is, without the need of ...
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Can oseltamivir shorten the duration of COVID-19 and inhibit replication and transmission of the SARS-CoV-2 (2019-nCoV) virus?

Oseltamivir (tamiflu) is an antiviral medication used to treat and prevent influenza A and influenza B (flu). It is said (https://www.ncbi.nlm.nih.gov/pubmed/27660842) to reduce symptom duration even ...
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Does microwave kill coronavirus?

This article suggests temperatures over 150 degrees Fahrenheit kill viruses . So, forgive me my ignorance on the subject, but does this mean that if I microwave a potentially infected (i.e. with ...
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Is this explanation of coronavirus accurate?

I have seen the following post popping up on Facebook recently: 🧐🧐🧐 Feeling confused as to why Coronavirus is a bigger deal than Seasonal flu? Here it is in a nutshell. I hope this ...
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Could the Cuban coronavirus antiviral be a mass cure for COVID-19?

Sometime around 1981, the Cubans invented an antiviral treatment for coronavirus. What is its relative efficacy against COVID-19? What are the pathways and obstacles for it making its way to being a ...
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Could a drug used to treat patients of a infectious disease be used preventively in possible asymptomatic patients?

According to Japanese flu drug reportedly shows promise against coronavirus in clinical trials A Japanese drug used to treat new strains of the flu has shown promise in being effective against ...
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Given “enough time”, does the coronavirus in a person just die off / get killed by white blood cells, leading to a full recovery?

During this social distancing that we're implementing, what happens to someone who, for example, is asymptomatic (i.e. has no symptoms) but is infected? Given "enough time", say, 2 weeks, does the ...
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Is there an IQ scale for viruses? [closed]

In this article and this thread influenza is called an "intelligent" virus. But how can a virus be considered "intelligent" when it has no brain? One relevant comment says: We all know that ...
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Why would someone, healthy and 10-39 years old, infected with covid-19 might die?

From https://ourworldindata.org/coronavirus we can see that a person between 10 and 39 years old has a probability of 0.2% of dying, which is very low but meaningful. See also this table below for ...
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Some queries on viruses [closed]

I'm someone from an Engineering background, so these questions might seem stupid, but I'd be grateful if someone could answer them. 1) How do viruses 'die'? Do they even die? I read that viruses are ...
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Proportion of Disease Transmission Methods [closed]

I'm looking for an estimate the proportions of virus transmitted mediums. Proportion of times a virus is transmited by: physical contact (handshake) droplet (someone sneezing) inanimate object ...
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Why are virus all destructive in nature?

The COVID-19 virus causes respiratory illnesses. The virus does so by changing the generic code of our cell. If a virus can cause a change in our body, like respiratory illness, can the same ...
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Do vaccines slow the spread of disease or do they reduce the severity of the disease?

I have been reading about the spread of virus and understand comparisons that are being made with the flu. The flu propagates through a population with vaccinated people while a new virus has an ...
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Is the washing hands in order to protect yourself from COVID-19 backed up by research?

I have been hearing a lot of people say that it is recommended to wash your hands thoroughly in order to maximise protection against COVID-19 infection. I also heard that the washing hands rumours are ...
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Is there a math formula for evaluating person's daily probability to contract COVID-19?

Could the following formula be used to evaluate person's daily probability to contract COVID-19 P = IFSum(KtoeTOEiKvcdVCDi, i={1...n}) where P - probability - in the range from 0 to 1 IF - person's ...
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How many ECMO machines does China have?

Is there any data on how many ECMO machines in China? I know that there are about 260 machines in the united states but I have found no data about China on such matter. I want to compare the ...
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Differences between Coronavirus and popular viruses

If you ignore the fact that the coronavirus is new and compare its symptoms and treatment to those of other viruses (influenza, etc), how does it compare? It seems to me that it doesn't have any ...
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Has WHO provided nutrition/diet/exercise guidelines to strengthen the human immune system in order to better respond to covid-19 infection? [closed]

I'm no related to medical sciences but my personal feeling is that: A strengthen immune system can better respond to viruses than a weak immune system. A balanced diet in combination with exercise ...
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Does immunity to some coronavirus confer any immunity to other strains?

Genetic sequencing of COVID-19 in China in December 2019 revealed two strains of the virus, identified as S and L, with S being the ancestral version while L was more prevalent (70:30 ratio) and more ...
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Is there a model that explains why Italy is the second most affected country by COVID-19?

I'm wondering if there's a model which explains why Italy is currently, judging by the data, the second most affected country by COVID-19. I'm not only talking about deaths but also infections. It ...
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Can the Coronavirus be spread via public toilet seats?

I would like to know if it has been proven or disproven that the Coronavirus/COVID-19 can be spread via public toilet seats? I am thinking that perhaps I should always carry around hand sanitizer ...
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Is there a spread of immunity agains viruses due to failed infections?

As an interested layperson (having small kids) I was told and read that some viruses are extremely infectious. E.g., very few virus particles of Norovirus (some say less than five) can cause an ...
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Why are there disproportionate deaths from new York to Washington?

Regarding the corona virus, why are there many deaths in Washington but none in new York?
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coronavirus impact on death probability [closed]

i am trying to understand the statistics of the coronavirus infection. Specifically i would like to understand what is the effect of the covid-19 disease on the overall death rate of the population. ...
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Does drinking water constantly protect against coronavirus infection?

At least in Poland there is an SMS people send to each other that warns one should be constantly drinking water, at least a few gulps every 15 mins to protect oneself against viral infection. ...
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Does viral load of the initial infection affect its severity?

If someone gets infected by a droplet containing a high load of the virus would he be more likely to develop more severe symptoms compared to someone who gets infected by a droplet containing a very ...
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How virus is distinguished by PCR test (different mutations/types? of sars-cov-2)?

I've done web search and did not find anything particular right away. Wikipedia articles are rather lengthy and I was not able to understand answer to my question. I've read yesterday there two types ...