how long does a stomach virus incubate?
91301
incubate, 2 to 14 days
206796
Samples should be collected within the first 4 days of illness. Rapid influenza tests provide results within 24 hours; viral culture provides results in 3-10 days. Most of the rapid tests that can be done in a physician's office are approximately >70% sensitive for detecting influenza and approximately >90% specific. Thus, as many as 30% of samples that would be positive for influenza by viral culture may give a negative rapid test result. And, some rapid test results may indicate influenza when a person is not infected with influenza.\n\nSerum samples also can be tested for influenza antibody to diagnose recent infections. Two samples should be collected per person: one sample within the first week of illness and a second sample 2-4 weeks later. If antibody levels increase from the first to the second sample, influenza infection likely occurred. Because of the length of time needed for a diagnosis of influenza by serologic testing, other diagnostic testing should be used if a more rapid diagnosis is needed.\n\nDuring outbreaks of respiratory illness when influenza is suspected, some samples should be tested by both rapid tests and by viral culture. The collection of some samples for viral culture is essential for determining the influenza subtypes and strains causing illness, and for surveillance of new strains that may need to be included in the next year's influenza vaccine. During outbreaks of influenza-like illness, viral culture also can help identify other causes of illness when influenza is not the cause.
156911
as a person that is HIV+ please listen to this... its not 6 months anymore. The CDC recommends 13 weeks but the ELISA and Western Blot test can detect the virus much sooner. Until you find out your results please make sure that you are protecting not only yourself but the ones whom you engage in relations with. And as far as Post Exposure Prophalaxis is concerned it hasn't been proven to be 100 % effective and generally is done with rape victims only.
478710
Certain types of food poissoning can take 24 hours to show up.  You should check www.webmd.com & they'll give you a lot of good answers
733957
How long has this been going on? If it's just been a few days, it's probably just a stomach flu or something he ate didn't agree with him. If it's been longer than a few days, there may be a medical problem that should be addressed. If this is a chronic problem, he should see a doctor immediately. Possible chronic issues could be Celiac Disease, IBS, intestinal blockage, food allergies...
273228
It does depend on what STD:\n\nHow long after a possible exposure should I wait to get tested for HIV? \nIt can take some time for the immune system to produce enough antibodies for the antibody test to detect and this time period can vary from person to person. This time period is commonly referred to as the “window period”. Most people will develop detectable antibodies within 2 to 8 weeks (the average is 25 days). Even so, there is a chance that some individuals will take longer to develop detectable antibodies. Therefore, if the initial negative HIV test was conducted within the first 3 months after possible exposure, repeat testing should be considered >3 months after the exposure occurred to account for the possibility of a false-negative result. Ninety seven percent will develop antibodies in the first 3 months following the time of their infection. In very rare cases, it can take up to 6 months to develop antibodies to HIV.\nhttp://www.cdc.gov/hiv/pubs/faq/faq9.htm\n\nSyphilis:\nShortly after infection, a blood test can tell if a person has been infected.  http://www.stayinginshape.com/3osfcorp/libv/0w04.shtml\n\nTrichomoniasis:\nThe symptoms usually appear one to 4 weeks after exposure.\nThe diagnosis in women is with a physical exam that reveals sores on the vagina or cervix. Tests on vaginal fluids can confirm the presence of the parasite.  http://www.stayinginshape.com/3osfcorp/libv/0w04.shtml\n\nHow soon after exposure can I be tested for sexually transmitted diseases and at what point can they be detected?\n\nTesting is based upon how long it takes to get a disease after being exposed. For gonorrhea it is four days, chlamydia is seven days, and syphilis is about three weeks. However, if someone has a verified exposure, they will be treated if they come into the clinic within these periods.\nhttp://www.oakgov.com/health/how_do_i/std.html\n\nHerpes Simpex Virus:\nIt takes about 3 months to rely on a negative test result. http://www.medhelp.org/forums/std/messages/1859.html\n\nGenital Warts (HPV):\nThere is no test for HPV, so you can forget that. (males) http://www.medhelp.org/forums/std/messages/1859.html\nA Pap test does not detect HPV itself. A laboratory technician uses a microscope to look at a sample of cervical cells for signs of abnormal changes that may be caused by HPV. (females)  http://www.plannedparenthood.org/pp2/portal/files/portal/medicalinfo/sti/pub-HPV-cervical-cancer.xml
392948
What is gastroenteritis?\nGastroenteritis is an inflammation of the gastrointestinal tract (the pathway responsible for digestion that includes the mouth, esophagus, stomach, and intestines). Gastroenteritis is also sometimes referred to as "stomach flu," even though it is not related to influenza.\n\nWhat causes gastroenteritis?\nGastroenteritis can be caused by viral, bacterial, or parasitic infections. Viral gastroenteritis is highly contagious and is responsible for the majority of outbreaks in developed countries.\n\nCommon routes of infection include:\n\nFood (especially seafood) \nContaminated water \nContact with an infected person \nUnwashed hands \nDirty utensils \nIn less developed countries, gastroenteritis is more often spread through contaminated food or water.\n\nWhat are the symptoms of gastroenteritis?\nThe main symptom of gastroenteritis is diarrhea. When the colon (large intestine) becomes infected during gastroenteritis, it loses its ability to retain fluids, which causes the person’s feces become watery. Other symptoms include:\n\nAbdominal pain or cramping \nNausea \nVomiting \nFever \nPoor feeding (in infants) \nUnintentional weight loss (may be a sign of dehydration) \nExcessive sweating \nClammy skin \nMuscle pain or joint stiffness \nIncontinence (loss of stool control) \nBecause of the symptoms of vomiting and diarrhea, people who have gastroenteritis can become dehydrated very quickly. It is very important to watch for signs of dehydration, which include:\n\nExtreme thirst \nUrine that is darker in color \nDry skin \nDry mouth \nSunken cheeks or eyes \nIn infants, dry diapers (for more than 4-6 hours) \nHow common is gastroenteritis?\nBecause gastroenteritis is so similar to diarrhea, and because so many cases do not require hospitalization, it is difficult to determine how many cases of gastroenteritis occur per year. Worldwide, it is estimated that three to five billion cases of acute diarrhea (which can be caused by many other diseases besides gastroenteritis) occur per year, with about 100 million cases in the United States (roughly one to 2.5 cases of diarrhea per child). Gastroenteritis is estimated to cause about 5-10 million deaths per year worldwide, and about 10,000 deaths per year in the United States.\n\nWho is at risk for gastroenteritis?\nAnyone can get the disease. People who are at a higher risk include:\n\nchildren in daycare \nstudents living in dormitories \nmilitary personnel, and \ntravelers \nPeople with immune systems that are weakened by disease or medications or not fully developed (i.e., infants) are usually affected most severely.\n\nHow is gastroenteritis diagnosed?\nThe doctor will take a medical history to make sure that nothing else is causing the symptoms. Also, the doctor might perform a rectal or abdominal examination to exclude the possibilities of inflammatory bowel disease (e.g., Crohn’s disease) and pelvic abscesses (pockets of pus). A stool culture (a laboratory test to identify bacteria and other organisms from a sample of feces) can be used to determine the specific virus or germ that is causing gastroenteritis.\n\nOther diseases that could cause diarrhea and vomiting are pneumonia, septicemia (a disease caused by toxic bacteria in the bloodstream), urinary tract infection, and meningitis (an infection that causes inflammation of the membranes of the spinal cord or brain). Also, conditions that require surgery, such as appendicitis (an inflammation of the appendix), intussusception (a condition in which the intestine folds into itself, causing blockage) and Hirschsprung’s disease (a condition where nerve cells in the intestinal walls do not develop properly) can cause symptoms similar to gastroenteritis.\n\nHow is gastroenteritis treated?\nThe body can usually fight off the disease on its own. The most important factor when treating gastroenteritis is the replacement of fluids and electrolytes that are lost because of the diarrhea and vomiting
235950
What is stomach flu? \nStomach flu is a viral infection that affects the stomach and small intestine.  It is also called viral gastroenteritis.  The illness is usually brief, lasting 1 to 3 days. \nHow does it occur? \nGastroenteritis is caused by swallowing certain viruses.  The body fluids of infected people contain the virus, sometimes even before their symptoms begin.  The virus can be spread by direct contact with an infected person (for example, kissing or shaking hands) or by sharing food, drink, or eating utensils. \n\nThe virus enters the stomach and intestine and inflames the lining of these organs.  As a result, the stomach and intestine are temporarily unable to perform their usual functions.  The virus can also cause food to move more rapidly through your gastrointestinal (GI) tract. \n\nSome bacteria and other tiny organisms called protozoa can cause infections that have symptoms similar to those of stomach flu. \n\nWhat are the symptoms? \nWhen you have stomach flu, you may have one or more of the following symptoms: \n\n• fatigue \n• chills \n• loss of appetite \n• nausea \n• vomiting \n• stomach cramps \n• diarrhea \n• low-grade fever \n• muscle aches.\nThe illness may develop over a period of hours, or it may suddenly start with stomach cramps, vomiting, or diarrhea. \nHow is it diagnosed? \nYour health care provider will review your symptoms.  He or she may examine you and order lab tests to rule out more serious illnesses, such as appendicitis, and to detect complications, such as dehydration. \n\nHow is it treated? \nThe most important thing to do is to rest the stomach and intestines.  You can do this by first eating nothing and drinking only clear liquids.  A little later you can eat soft bland foods that are easy to digest. \n\nDuring the vomiting phase of the illness it is best to have only small, frequent sips of liquids. \nDrinking too much at once, even an ounce or two, may cause more vomiting. \n\nYour choice of liquids is important.  If water is the only liquid you can drink without vomiting, that is okay.  However, if you have been vomiting frequently for a long time, you must replace the minerals, sodium and potassium, that are lost when you vomit.  Ask your health care provider what sport drinks or medical products could help you replace these minerals. \n\nOther clear liquids you can drink are weak tea and apple juice.  You may also drink soft drinks without caffeine (such as 7 UP) after letting them lose some of their carbonation (go flat).  Chilling the liquids may help you keep them down.  Avoid liquids that are acidic (such as orange juice) or caffeinated (such as coffee) or have a lot of carbonation.  Do not drink milk until you no longer have diarrhea. \n\nYou may start eating soft bland foods when you have not vomited for several hours and are able to drink clear liquids without further upset.  Soda crackers, toast, noodles, applesauce, and bananas are good first choices.  Avoid foods that are acidic, spicy, fatty, or fibrous (meats, coarse grains, vegetables) and dairy products.  You may start eating these foods again in 3 days or so, when all signs of illness have passed. \n\nSometimes treatment includes prescription medicine to prevent nausea and vomiting or diarrhea.  Nonprescription medicine is available for the treatment of diarrhea and is very effective.  If you use it, make sure you use the dose recommended on the package.  Before you use any medicine \nfor diarrhea, always check with your health care provider first. \n\nIf you have been vomiting for more than a day or have had diarrhea for over 3 days, call your health care provider.  You may need to have a physical exam to rule out more serious problems and to check for dehydration.  You may also need to have lab tests to determine whether bacteria or protozoa are causing your illness. \n\nDehydration is a potentially serious complication of stomach flu.  It can occur if your body loses too much fluid because
288562
The Human Immunodeficiency Virus enters the body some way. When it enters the bloodstream it enters crucial immune response cells. Once these cells have been infected it seems like nothing is happening. When those initial cells are being attacked there is a response that is felt in some way. It takes about two weeks or 10-14 days for the initial cells to be destroyed. Cell upon cell coming into contact with virus but being destroyed. Think of rubbing your feet vigorously on a carpet and then touching metal. \n  Now think of the immune system like tracks in a recording studio or screens on a computer. These initial cells or this first track is still working but the cells are not as prominent. Now, the amazing immune system actually rebounds and track two starts working. This goes on and on and on until track two is lowered and then track three begins and so on.....   When the immune system has spent all its "tracks" then HIV progresses to what is called AIDS.
696189
A stomach virus is not contagious, except through the gut.Your Dad and nephew acquired it from something they ate or drank. Stomach viruses have a short incubation period. Your son probably did not eat the same thing, or he would have got the infection by now. Those who have it should be careful about hand- washing and washing of utensils and dishes.\nThe flu shot will not help. Food poisoning is almost the same.
593377
it all depends on your immune system response and the type of virus you contract.  for example, when talking about the flu, if you contract the H1N1 strain chances are you won't even know it because the symptoms will be so minimal, but if you contract another strain like H3N2, you will get notice the symptoms and the rate of appearance of those symptoms will depend on how healthy your immune system is, but usually within hours to a couple days.
11037
Yes through vaginal fluids and other fluids.  If I remember correctly the virus cannot live long outside the body, I'm thinking like ten minutes.  I also believe it can be transmitted through breast milk, but i'm not sure.
401049
Most people infected with HSV-2 are not aware of their infection. However, if signs and symptoms occur during the first outbreak, they can be quite pronounced. The first outbreak usually occurs within two weeks after the virus is transmitted, and the sores typically heal within two to four weeks. Other signs and symptoms during the primary episode may include a second crop of sores, and flu-like symptoms, including fever and swollen glands. However, most individuals with HSV-2 infection may never have sores, or they may have very mild signs that they do not even notice or that they mistake for insect bites or another skin condition.
349189
You can be infected with HIV, the virus that causes AIDS, and have no symptoms at all. On average, it takes about 7 to 9 years for symptoms to develop. Most symptoms of AIDS are not caused directly by the HIV virus, but by an infection or other condition acquired due to the weakened immune system. Symptoms can include severe weight loss, fevers, headaches, drenching night sweats, fatigue, severe diarrhea, shortness of breath, and difficulty swallowing. The symptoms tend to last for weeks or months at a time and do not go away without treatment. Since these symptoms are commonly seen in other diseases, you can't assume any symptom is HIV/AIDS-related until you get laboratory tests. See a doctor if you think you may be at risk or if you have symptoms. \nYou might not know if you get infected by HIV. Some people get fever, headache, sore muscles and joints, stomach ache, swollen lymph glands, or a skin rash for one or two weeks. Most people think it's the flu. Some people have no symptoms. \nThe virus will multiply in your body for a few weeks or even months before your immune system responds. During this time, you won't test positive for HIV, but you can infect other people. \nWhen your immune system responds, it starts to make antibodies. When you start making antibodies, you will test positive for HIV. \nAfter the first flu-like symptoms, some people with HIV stay healthy for ten years or longer. But during this time, HIV is damaging your immune system. \nOne way to measure the damage to your immune system is to see how many CD4+ cells you have. These cells, also called "T-helper" cells, are an important part of the immune system. Healthy people have between 500 and 1,500 CD4+cells in milliliter of blood. \nWithout treatment, your CD4+ cell count will most likely go down. You might start having signs of HIV disease like fevers, night sweats, diarrhea, or swollen lymph nodes. If you have HIV disease, these problems will last more than a few days, and probably continue for several weeks.
559862
diarhea, vomiting, chills, nausea, stomach ache/cramps, fever are the common ones. they usually clear up on their own within 12-48 hours.\n\nif you have trouble breathing, speaking, moving are seeing things double, you need to go to a hospital immediately. \n\nsymptoms depend on what organism caused it.
962673
Several days.  Why? Are you gonna test positive?
17476
Spread by virus-infected droplets that are coughed or sneezed into the air, the flu is contagious. People infected with the flu are contagious as long as they show symptoms (most of the time that means about 1 week for adults, but for children it can mean up to 2 weeks).