Virology deals with the study of viruses, infectious entities that require the machinery of a host cell to replicate.

learn more… | top users | synonyms

8
votes
1answer
1k views

How long does the Ebola virus remain infectious on contaminated items or surfaces?

I'm sure there will be variation depending on what the contaminated item or surface is made of - linens, I could imagine, would remain dangerous for longer than a door-knob. But if the items are not ...
1
vote
1answer
58 views

What are the disadvantages of forbidding flights to and from the African Ebola region?

After looking through the available Stack Exchange sites, this one seems to come closest to the appropriate place to ask... Popular opinion, including my own, is that banning flights to and from the ...
1
vote
1answer
50 views

Why is it called “Ebola virus disease”, not just “Ebola” or “Ebola disease”?

Why do scientists (pretty consistently) call it Ebola virus disease, rather than just Ebola, or Ebola disease? Many other diseases are caused by viruses, but they don't seem to have this detail of ...
10
votes
2answers
171 views

Why don't we develop immunity against common cold?

We all suffer from common cold, and that, frequently. Why have we not developed immunity against it till now? By immunity I mean immunity as a species.
8
votes
3answers
1k views

Why is the current Ebola outbreak different from previous outbreaks?

I don't know if this question has an answer at this time, but I would like to know if there is some biological reason why the current Ebola outbreak is so much more complicated and widespread than in ...
2
votes
1answer
31 views

multiple HIV infection in same T cell

I was wondering can multiple HIV virus infecting same T cell ? Coz in flu virus they have SA to cleave of those sialic acid residue preventing re-infection of the same cell by other viruses to ...
3
votes
1answer
55 views

Can we attack viruses by attaching proteins and such to their shells?

Haven't looked into this to very long, but an initial search didn't return anything. HIV uses certain co-receptors to enter our cells. Could we flood the blood stream with specially designed ...
2
votes
3answers
104 views

What equipment would one use to modify a virus? [closed]

Would anyone be so kind as to give me a few examples of the equipment involved when modifying a virus? Otherwise my novel may end up reading Eva entered the lab and modified a virus. Not much back ...
6
votes
1answer
92 views

Can we really 'discover' 85% of mammalian viruses?

This virology [blog] discusses estimates of the number of mammalian viruses and the costs of 'discovering' 85% of them. My question is whether this is not a forlorn hope. The ".632 rule" in ...
0
votes
0answers
11 views

What is the role of antigens of HBV in development of disease?

What is the role of different forms (filamentous and spherical) of HBV? Both forms are made exclusively of HBsAg. The filamentous form contains just much more (200 nm length), while 20 nm length for ...
0
votes
0answers
16 views

How do the fusion processes of replication differ between Orthomyxoviridae and Paramyxoviridae?

Replication occurs in the former in the nucleus, while in the latter in the cytosol. In the former, the virus first fuses through the nuclear membrane, transcripts and translates in the nucleus, ...
2
votes
1answer
43 views

How does the MMR vaccine affect lymph nodes in preventing measles?

I am trying to understand this statement about the Measles part of the MMR (Mumps, Measles and Rubella) vaccine Measles prevention: MMR (AB protect during primary and secondary viremia) Measles ...
14
votes
1answer
1k views

What do viruses do during incubation period?

For example, there is an incubation period of around 1 to 3 days for common cold, and that of AIDS can range over to decades. What do viruses do actually do during the incubation period? What ...
4
votes
2answers
151 views

Can a virophage potentially be used to cure a viral disease?

Wikipedia states "Virophages are satellite viruses that inhibit or impair the reproduction of the auxiliary virus." Is it theoretically possible for a virophage that doesn't hurt the human body to ...
5
votes
2answers
71 views

Viruses: Adaptation to a new host through repeated host jumps

A friend told me, during a 3 minute discussion, that viruses that are endemic in host $A$ and make repeated jumps to host $B$ but can't be transmitted between individuals of species $B$, may slowly ...
2
votes
1answer
56 views

Do any nonhuman species have effective ebola immunity?

I've read that ebola is an effective killer in humans because it has the ability to interrupt dendritic cells from manufacturing proteins that cause the immune system to destroy the dendritic cells ...
1
vote
1answer
56 views

Why don't we see new diseases more often? Or, ever?

It seems like every disease we ever hear about is something that's been around since ancient times, since thousands of years ago. Of course new diseases were catalogued over the course of the past ...
7
votes
1answer
386 views

How can highly virulent but uncommon diseases (like ebola) maintain a stable equilibrium?

I'm wondering how can very uncommon diseases remain in a relatively stable equilibrium. For example, if it started to spread, the spread could accelerate and become an epidemic. However, if it doesn't ...
8
votes
2answers
2k views

Why do I need a flu shot every year, while many other vaccinations last years or even a lifetime?

Is it a viral vs. bacterial thing? Is there just more variety among types of flu than other diseases, so that this year's vaccines don't cover next year's flu?
1
vote
1answer
131 views

Is it impossible for a retrovirus to be lysogenic?

Is it impossible for retroviruses to be lysogenic? In the lysogenic cycle, the viral genetic material is incorporated into the host cell's DNA. Because retroviruses have RNA, it would be impossible ...
1
vote
1answer
31 views

In the lysogenic cycle, does the provirus split from the cell's main genetic material for replication?

In a diagram of the lysogenic cycle sent by my instructor in a video, it shows the provirus splitting from the cell's main DNA when the dormancy period ends and the viral DNA is "activated". Is this ...
3
votes
2answers
130 views

What happen's to a virus's capsid after it injects its genetic material into the host cell?

After a virus (one of the varieties which infects the cell via injection and not endocytosis) injects its genetic material into the host cell, what happens to its protein coat? I would guess that it ...
1
vote
1answer
48 views

Do lysogenic viruses only infect bacteria?

In the video sent by my teacher on viruses, the example he used for lysogenic viruses was a bacteriophage infecting a bacteria. When he was describing how the genetic material was incorporated into ...
2
votes
1answer
50 views

Lytic Viruses — Cell lysis?

So in the video my instructor sent on viruses, he said that for lytic viruses, new viruses manufactured by the host cell could get out of the cell in one of two ways. The new viruses would leave by ...
3
votes
2answers
87 views

Are viruses self-propelled?

So obviously, viruses are nonliving. But when my teacher was teaching viruses in the video (we're doing "flip" learning this semester), the way he described it, it seemed like the viruses responded to ...
2
votes
2answers
66 views

Are B Cells unique to an individual's immune system?

I was wondering how the body "remembers" viruses after having once overcome them, and while reading this article on the immune system (page 14, Vaccinations), I read: There are many diseases that, ...
2
votes
0answers
22 views

What is the origin of viruses? How could they get both living and non-living characteristics? [duplicate]

I read that viruses are called intermediate between living and non-living particles. Well, if so, then where did they originate from? From living or non-living? If they originated from either living ...
2
votes
2answers
108 views

Can retroviral delivery systems “overwrite” genes?

As the question states, what are the limits of retroviral genetic delivery systems? Are they limited to adding additional gene sequences to a cell, or can they actually overwrite specified segments ...
1
vote
1answer
182 views

How to deduce if RNA virus infection or DNA virus infection

Is there any general rule to say this must be RNA virus infection and the other one DNA virus infection? Example of a case: 5 children develop a bright red rash on the face and turns violet after a ...
2
votes
1answer
599 views

Difference between viral and human genetic material

I have heard that there is a difference between viral and human genetic material. What is that difference? If I take my cells and take DNA out of them and insert only a small part of it having a ...
16
votes
6answers
2k views

Why isn't a virus “alive”?

The recent news about a new supermassive virus being discovered got me thinking. What biological differences between viruses and cellular organisms have made viruses be deemed non-living?
2
votes
2answers
142 views

Is this a valid principle of curing HIV?

I have a set of questions actually, it will be very helpful if you answer them in order. Where does the HIV virus hide (during incubation period)? Let answer be X cell. Is X cell in the bloodstream? ...
0
votes
1answer
151 views

Why not use SDS-PAGE as a method to detect viruses?

Recently, I have been researching about DNA and I know the most popular method for detecting viruses is based on DNA. After learning about proteins, I wonder why we do not detect viruses based on ...
1
vote
1answer
551 views

How do viroids propagate to other hosts?

As viroids are simply non-encapsidated non-coding RNA molecules, it is difficult to imagine a mechanism for their continual infection, other than horizontal transfer which doesn't seem to be the case. ...
3
votes
1answer
165 views

What is the best way to clean plastic flasks that have been used for cell cultures - is virkon a good idea?

When you use cultures e.g. insect cells, which are infected with virus one way to clean the (plastics) shake flasks is with virkon. Which is the most effective way to clean your flasks in order to ...
3
votes
1answer
735 views

Is it possible for a person to become “reinfected” with the same strain of a virus?

If a person contracts a virus, viral conjunctivitis for example, is it possible for the individual to become "reinfected" with the exact same strain of the virus once the person has it treated and the ...
1
vote
0answers
63 views

Carrying or packaging capacity of SAD B19 dG rabies virus

I'm wondering about the carrying capacity also referred to packaging capacity or loading capacity (how many base pairs can be packed efficiently into virions) of the pseudotyped rabies virus SAD-dG as ...
2
votes
0answers
90 views

How long does Lentivirus take to express in vivo mouse neurons?

Does anyone know how long it takes for a standard Lentivirus vector to express its genes (under a strong promoter such as CAG, CB7, etc.), after injection into the brain of a mouse? By hearsay I ...
1
vote
1answer
99 views

Agony, Hydrophobia and viruses in the light of evolutionary principles

I'm undergraduate physics student, but I've always been interested in biology. So I have a couple of questions about an application of the evolutionary principles to practice. Agony as the last ...
2
votes
1answer
73 views

Does this patient have HHV6 or HCMV after transplant surgery?

I have been given mock results from a PCR test on blood samples taken from kidney recipient patients and their donors. The PCR reaction can detect single copies of viral DNA. I have been asked to ...
6
votes
1answer
4k views

How long will norovirus live?

I hope this is the right place to ask. I subscribe to several Stack Exchange threads, and regard them as the best internet forum for genuine and credible answers. I spent last evening talking to ...
4
votes
2answers
159 views

Is every part of a virus important for replication?

Is every component of a virus absolutely essential for its infection and replication in a host cell? Or can you just have parts of it to cause infection?
3
votes
3answers
187 views

Are there people cured of HIV by means of HAART?

I wonder if there people who were cured of HIV only by means of highly active anti retro-viral therapy (HAART) or other drugs rather than by bone marrow transplant? I know that HAART can suppress HIV ...
2
votes
0answers
157 views

Virucides - Herbal and otherwise, for HHV6 type virus or any inner-cell virus

Does anyone know where I can find a reliable list of virucides (not anti-virus) that can be used by humans? This virucide must be able to affect viruses that are already inside the cells. St John's ...
1
vote
3answers
267 views

Do Viruses produce a biomagnetic field?

From wikipedia: Biomagnetism is the phenomenon of magnetic fields produced by living organisms. The present scientific definition took form in the 1970s, when an increasing number of researchers ...
6
votes
2answers
164 views

Why are some viruses not communicable person-to-person?

Below are two quotes from the CDC about Hantavirus: "Researchers believe that people may be able to get the virus if they touch something that has been contaminated with rodent urine, ...
3
votes
0answers
104 views

Cheapest Way to Measure Germ Density

I would like to measure the surface density of Staphylococcus bacteria and Rhinoviruses (only those two, to be specific) within my home. What's the cheapest way? The textbook procedure is to: rub ...
7
votes
2answers
163 views

Is it possible for parasitic wasp to alter the behaviour of it's host after emerging from it?

I know that parasitic wasp larvae could live for a long time inside their alive host (eg. caterpillar), but I always thought that they kill the host when they eventually get out of it. But once I've ...
8
votes
2answers
3k views

What is the life cycle of a wart?

There doesn't seem to be a lot of information available on research done on warts. What is the life cycle of a wart? How does it spread? -- specifically how does it recruit cells to spread it? What ...
6
votes
1answer
99 views

What is the biological mechanism linking temperature and probability to be infected with a virus?

It is common knowledge that when you're cold you could get a cold. What is the mechanism linking temperature and viral infection?