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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Could a virus be used to reverse hair loss?

So viruses have the ability to enter cells and alter DNA. Maybe it is possible for one to deactivate the portion that causes DHT sensitivity of hair follicles, the common cause of hair loss. Could a ...
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What is the longest time, a virus can survive outside human/living things– especially inside packed foods?

We know that viruses can't reproduce outside living cells, but what is the longest period of time, any virus can stay outside living cells? In this article by BBC Science focus it explains that ...
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Is the code from the mRNA vaccine executed by the cells as a one-off?

Is the code from the mRNA vaccine executed by the cell that has taken it up as a one-off or does the cell produce the spike proteins endlessly (like a programming loop) until the cell is killed by the ...
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How can vaccines be effective against respiratory viruses when it is the innate immune system that is the primary response to such pathogens?

I don't understand how vaccines can be thought to be effective against respiratory viruses. We have influenza "vaccines" and now the new mRNA vaccine against COVID-19. However, my ...
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Is there any infection that targets/found in specifically the nape of the neck?

Is there any infection(s) of the nape caused by a foreign body (bacterial, viral, fungal, etc)? I mean a foreign body infection found or originating primarily or solely in the nape. I know some ENT ...
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Could the COVID-19 vaccine adversely impact healthy protein reception?

I'm not a health expert, just trying to understand possible long-term side effects of the vaccine, so if my terminology and thinking is off, feel free to correct. The prominent vaccines right now are ...
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For fighting COVID19, Why we give the body the RNA and not give the body the protien itself? [duplicate]

If I understand things correctly the popular COVID 19 vaccine gives the body RNA that teaches the body cells to create a protein that looks like the virus. And then the body learns to fight against it....
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How can “new viruses” exist?

Background: I have no background in medical sciences, and this is something I've been thinking about since the start of the Covid-19 pandemic; please ELI5 your answer if you can. Thanks! We estimate ...
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Nasal spray or oral spray against airborne viruses

I'm seeing different approaches to try protect/alleviate against airborne viruses (e.g. HRV). Let's take some examples: Enzymatica ColdZyme - oral spray P&G Vicks First Defense - nasal spray ...
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Long term Itchy Chickenpox rash [closed]

I had suffered from chickenpox in 2008. After that, i'm fully recovered by 14days after the symptoms appear. Now, every bumps on my skin had disappeared. But a one bump of my skin which is located at ...
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How do mRNA vaccines work and what are their advantages over traditional vaccines?

How do mRNA vaccines work? To my intuitive understanding, for an mRNA vaccine to work, the mRNAs injected into the patient need to first enter a cell and get translated into proteins. Those proteins ...
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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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Could using machine-intelligence to determine prioritisation for vaccine rollout program be effective

The rollout of vaccination programs tends to be based on a given set of rules (advice) devised by government UK example. Such a rule-set are generally limited in complexity in order to be consistently ...
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Is it possible to increase viral load and COVID-19 disease severity through subsequent infectious doses? [closed]

There is potentially a causal chain leading from high initial infectious dose to high viral load to high disease severity for COVID-19. See, for example, evidence surveyed here. However, once someone ...
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Given that reinfection is possible with the flu viruses, why didn't the 1918 flu pandemic last forever?

We know that reinfection is possible with the seasonal flu and one could surmise that it was also possible with the 1918 flu strain. But if reinfection is possible and immunity to the flu doesn't last ...
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What makes “chickenpox parties” recommended?

Prior to the availability of the chickenpox vaccine in the mid-90s, I recall the prevailing medical recommendation was to expose children to the virus at "chickenpox parties" with other kids ...
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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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Are lockdowns good or bad? What is the scientific consensus, if any? [closed]

I thought doctors support lockdown measures and populist politicians oppose them, but then this "Barrington Declaration" cropped up and I don't know what to think now. Are lockdowns good or ...
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Are there already statistics about the spread of common viral diseases in the Covid-19 pandemic era?

Are there already public statistics regarding the spread of other viral diseases since the beginning of the Covid-19 pandemic, and the application of mandatory protection rules (e.g. protection masks, ...
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Which HPV types are detectable by the immune system to remove it from body?

Some resources (like WHO) says that HPV can be cleared by the immune system as the following. WHO There are many types of HPV, and many do not cause problems. HPV infections usually clear up without ...
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How soon after a small skin cut will the skin restore its bacteria/virus defense?

I am asking in the context of preventing STD transmission via small cuts in the hand as in the image : https://thumbs.dreamstime.com/b/cut-finger-wound-closeup-human-hand-hurt-bleeding-healthcare-...
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Would a vaccine made for humans work on animals who can get the same virus?

Recently it has been reported some dogs and cats getting covid-19. This doesnt seem to be so common I suppose, since we only hear about a few cases but I'm assuming they can transmit the virus anyway. ...
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How long does it take for the COVID-19 antibody to disappear?

I saw a news article says; 90 days after the infection with ncov19, several patients had no detectable antibodies in their bloodstream. This seems to be one of their evidence that immunity against ...
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Is it possible to remove HPV from the body by strengthening the immune system?

I saw some content which says HPV can be removed from the body by strengthening the immune system: https://www.cdc.gov/vaccines/pubs/surv-manual/chpt05-hpv.html Most HPV infections are transient and ...
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Have any novel virus or bacteria ever been created by man in the laboratory that we know of?

This question may be off topic for medicine. Let us not consider COVID19. Are there any known man made viruse or bacteria ever created or modified by man that we know of? Bio weapons labs weaponize ...
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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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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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What makes a person asymptomatic? How does it work?

As someone who's simply asking out of curiosity, I've tried looking into the topic myself, but often times I run into answers with little or no detail on the subject. Sometimes the question is more ...
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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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Are betadine mouthwashes really effective against COVID-19?

Recently news have come up that betadine/povidone-iodine mouthwashes should be used for prevention of COVID-19. Betadine is an antiseptic. We use it in our clinic to clean a wound or after minor ...
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What is the Fatality Rate of the Common Cold?

During COVID-19, we've heard many comparisons between SARS-CoV-2 and the Flu, especially in terms of the case fatality rate (CFR). Currently, the Flu is thought to be around 0.1%, and according to the ...
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If a rabid wolf bites your head and you have recently been vaccinated against rabies, will you still develop the disease?

I have read that if a large rabid animal bites your head, the post-exposure treatment can be ineffective: ...a bite near the head will make the disease act too fast for the treatment to take effect....
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How quickly does soap inactivate enveloped viruses, e.g. influenza, compared to antiseptics like alcohol?

To begin with, I'm not talking about merely washing away a virus with soap (and water), but rather that enveloped viruses, like influenza appear to also be directly attacked in their lipid envelope by ...
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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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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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Has World Health Organization provided nutrition/diet/exercise guidelines to strengthen the human immune system for better responding to COVID-19?

Medical sciences is not my subject 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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Are there any other reasons than mutation that could cause a virus to be able to infect the same person twice?

If you are infected by a virus, and subsequently survive it and get completely rid of the infection, are there any other possible reasons for the same virus to be able to infect you again any time in ...
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How relevant is TMPRSS2 for the entry of common-cold coronaviruses?

To complement a question here about the receptor used by the common-cold coronaviruses, I'll ask the same about the relevance of TMPRSS2 for these, noting that it seems quite important for the SARS-...
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What do we know about the connection between SARS-CoV-2 and meat plants? [closed]

In the last days we get news from all over the world that "meat plants" are severely hit by Covid-19 outbreaks (Ireland, Poland, Canada, US). We also know that the "wet market" in Wuhan played a ...
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Are there methods available to determine ongoing cell damage in Covid-19 survivors?

It took years for many of those first infected with Hepatitis-C, to learn that it was destroying their livers. It took years for those with HIV to learn their immune systems were being destroyed. Is ...
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What receptors are targeted by the seasonal coronaviruses that primarily present as winter colds?

We know that SARS-CoV-2 appears to mainly attack animal cells by the ACE2 receptor, MERS-CoV by the DPP-4 receptor, and SARS-CoV also by the ACE2 receptor. Do we know what receptors are targeted by ...
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Does the blood removed from the body still have immunity?

I know that blood contains white blood cells (which attack pathogens). Suppose we take half a liter of blood out of the body and implant the virus into it. Can the white blood cells in that half a ...
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Do common colds transmit poorly through mouth-to-mouth kisses?

The Guardian (in 2017) chose to highlight this study In 1984, researchers at the University of Wisconsin-Madison decided to investigate one of the best-known ways of catching a cold. They infected ...
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Are there viruses which can spread from humans to animals, but cannot spread from animals to humans? [closed]

It had already been proven that felines can be infected with COVID-19 from exposure to infected humans. However authorities are currently saying that there isn't evidence of the opposite happening - ...
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Why isn't saliva sampling used when sampling for the presence of respiratory diseases?

Previously I've asked a question focused on COVID-19: Why did countries initially presume that detecting COVID-19 requires a deep nasal swab? @Fizz provided the following response: So clearly it was ...
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COVID-19 Contact tracing- Is there any clarity on the duration of “contact”

I was somewhat surprised to hear that contract tracers are instructed to disregard contacts between an known infected person (positive tested) person and their contacts if the duration of a contact is ...
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How is COVID-19 transmission tracked with any accuracy?

I saw this article: New study finds few cases of outdoor transmission of coronavirus in China (and study it is based on). I don't have a science or medical background so maybe this is obvious but how ...
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Why does COVID-19 include dry cough as a symptom rather than a wet cough?

I am not sure if this is the right question in this forum, but since it pertains to medical symptoms usually encountered in patients affected by COVID-19, I am asking this question here. Why in ...
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How long does the Dengue virus last in the human body?

As far as I understand Dengue is transmitted through mosquitos when they bite an infected human, and the new born mosquitos arent born with the virus. We are having a bad Dengue epidemy here for the ...

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