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How do viruses Cause disease symptoms

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All disease symptoms are different from each other. Is there a specific disease you're looking for. [ Source: http://www.chacha.com/question/how-do-viruses-cause-disease-symptoms ]
More Answers to "How do viruses Cause disease symptoms"
How do viruses Cause disease symptoms
All disease symptoms are different from each other. Is there a specific disease you're looking for.
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Related Questions Answered on Y!Answers

How does RSV cause disease?
Q: I am working on a project, and need to find out how RSV (Respiratory Syncytial virus) causes symptoms. I mean more on a molecular level (like, does it cause an over-reacted immune response, release toxins, etc). Some facts: it is a sense-negative RNA virus.Thank you all very much, I am having a hard time find this answer!Umm, thank you, but I have all that info already and it didn't answer my questions at all.
A: I had a hard time finding out how this virus causes disease as well, however after some digging I believe I may have something to help you.The virus is named Respiratory Syncytial Virus and that name is the key to the process.Syncytial (or syncytium): Definition>>The formation of a syncytium, a mass of cytoplasm containing several nuclei enclosed within a single plasma membrane. Syncytia are normally derived from single cells that fuse or fail to complete cell division.The RSV virus causes respiratory epithelium to fuse into larger, but non-functional cells. This prevents the cleansing of the lungs and the generation of huge amounts of mucus.The virus spreads from cell masses to other cells causing an overall inflammatory process. Of course, the body tries to fight this off which further contributes to the inflammatory process.The inflammation makes it hard to breathe, which is why small children are most affected. They have relatively weak immune systems, so the virus runs rampant. Adults generally have better immune systems so it tames the virus much quicker.Viruses don't cause the production of toxins. Since they are only genetic materials (RNA or DNA) with some other parts, their mission is reproduction and dissemination using the body's cellular machinery to do the work. Toxins would inhibit that ability.An over active immune response doesn't seem to be a issue either. If so, you would expect adults to be more affected which is not the case.I am including the reference where I got my definition. Its noted below.HTH
help needed on biology assignment?
Q: ive got a couple of questions about viruses1) what features do viruses have in common with living things? apparently, viruses have some sort of a chemical that is only found in living creatures, but i cant seem to find out what this chemical is.2) why do we need technology to tell us that viruses are inside our body? i think it has something to do with the fact that a virus trick our body into thinking that we need to produce more of them but im not completely sure. also, could you please explain how technology is used to detect a virus?3) the last one is a little complicated. so here goes: in a disease caused by bacteria, the symptoms tend to gradually get worse. in a disease caused by a virus, the symptoms come and go. for example the temperature goes right up and then falls a bit and then goes up again. suggest an explanation for the differences in virus caused and bacteria cause diseases?Thanx :)
A: 1) protein and lipids.2)One of the first ways that viruses can be detected is through the symptoms they cause to their host. Doctors can use symptoms such as coughing, headaches, pain, sensitivity and nausea, to help determine which virus a patient may be suffering from. Unfortunately, many viruses share the same symptoms. When this is the case, further testing is required.One of the first tests that doctors turn to for viral detection is saliva testing. Saliva testing involves taking a swab of mucus from the nose, throat, or mouth, and using specialized lab equipment to search the sample for antibodies. Antibodies are specific proteins that are created when the body interacts with and tries to fight an antigen, or in this case a virus. Since each antibody is specific to a certain virus, the lab specialist can determine exactly what virus is infecting a patient by the antibodies that are produced.Though a saliva test is quite accurate in detecting antibodies, it can take up to a month or more for antibodies to reach high enough levels to be detected. For faster viral detection a blood test can be a particularly valuable tool for medical technologists. Blood testing not only allows for antibody detection, it is allows lab professionals to look for the actual genetic material of the virus. As the virus hijacks healthy cells in the body, it leaves behind a trail of its genetic material (DNA or RNA). Since genetic material is specific to each virus, the doctor can use the lab results to make a specific viral diagnosis.3) Fever is a response of the immune system to infection. So if the temperature fluctuates it means that the the virus is able to remain undetected by the immune system and can also be detected. In other words, viruses can hide.
What are the effects (not the symptoms) of the flu on a persons body/ cells?
Q: I'm doing a project on viruses in Biology that requires me to know the following:1) The cause of the disease. (Found)2) How it is spread. (Found)3) Symptoms. (Found)4) What the pathogen (in this case, a virus) specifically does to our body or cells. (Not found)Please help if you know the answer to number 4. Thank you so much, ahead of time.
A: Great question, and great distinction beween effects and symptoms!First, you have to understand the larger context of what is going on, which is an evolutionary arms race between the flu virus and its host. In both species, the evolutionary strategy is to survive and reproduce. In the case of the virus, its strategy is to infect the host and make it sneeze and cough, which thus spreads the virus to other potential hosts. The host's strategy is somewhat similar: to expel the virus by sneezing and coughing (or to kill the virus by other means).It is really critical to understand this evolutionary process, and to make the distinction that you mentioned between effects and symptoms.The EFFECTS are the actions of the virus, in making the host sneeze and cough.The SYMPTOMS are the actions of the host aimed at killing or expelling the virus. These symptoms include fever (which kills off bacteria and viruses), reducing the level of iron in the blood to produce anemia (thus starving bacteria and viruses), and sneezing and coughing (to get rid of the bacteria and viruses).When patients and doctors don't understand the differences between the effects and the symptoms, they too often treat the symptoms. In other words, they give drugs to reduce the fever, they give iron to fight the anemia, and they give drugs to stop the sneezing and coughing. In each case, they are thwarting the body's natural attempts to fight the disease.By the way, for many medical questions, you can get a variety of perspectives by using the new health search engines at http://getathirdopinion.com/There are three search engines: (1) the first one searches US government web sites, and gives conservative medical advice, usually involving drugs (which as I said above is often the worst thing you can do). (2) the second one searches mainstream medical blogs like the Mayo Clinic and WebMD, and gives a balanced selection of results which tend to give both side of health issues and (3) the third one searches alternative web sites, which usually means natural/drug-free approaches. This third approach is often the best, because it lets the body do its job without chemical interference. Millions of years of evolution have produced very sophisticated biological defenses which are often superior to the chemicals from the drug factories.

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