after a person has been exposed to chickenpox how long till they are contagious?
606635
A person infected with chickenpox can spread the virus before developing any symptoms. Chickenpox is most contagious from 2 to 3 days before the rash develops until all the blisters have crusted over.
456751
Once you have chickenpox, you are considered immune; you will not have a serious infection again, but you may have a mild infection (called a breakthrough infection). Generally, if the virus becomes active again, it will not result in chickenpox but can cause shingles, or herpes zoster.
699787
"The disease is only moderately infectious, far less so than chickenpox. Unlike chickenpox, smallpox is not notably infectious in the prodromal period—viral shedding being delayed until the appearance of the rash. Smallpox transmission is a risk of prolonged social contact, direct contact with infected body fluids or contaminated objects. Infection in the natural disease will be via the lungs. The incubation period to obvious disease is around 12 days. In the initial growth phase the virus seems to move from cell to cell, but around the 12th day, lysis of many infected cells occurs and the virus will be found in the bloodstream in large numbers. The initial or prodromal symptoms are essentially similar to other viral diseases such as influenza and the common cold—fevers, muscle pain, stomach aches, etc. The digestive tract is commonly involved, leading to vomiting. Most cases will be prostrated.\n\nSmallpox virus preferentially attacks skin cells and by days 12–15, smallpox infection becomes obvious. The attack on skin cells causes the characteristic pimples associated with the disease. The pimples tend to erupt first in the mouth, then the arms and the hands, and later the rest of the body. At that point the pimples, called macules, should still be fairly small. This is the stage at which the victim is most contagious.\n\nBy days 15–16 the condition worsens—at this point the disease can take two vastly different courses. The first form is of classical ordinary smallpox, in which the pimples grow into vesicles, and then fill up with pus (turning them into pustules). Ordinary smallpox generally takes one of two basic courses. In discrete ordinary smallpox, the pustules stand out on the skin separately—there is a greater chance of surviving this form. In confluent ordinary smallpox, the blisters merge together into sheets which begin to detach the outer layers of skin from the underlying flesh—this form is usually fatal. If the patient survives for the course of the disease, the pustules will deflate in time (the duration is variable), and will start to dry up, usually beginning on day 28. Eventually the pustules will completely dry and start to flake off. Once all of the pustules flake off, the patient is considered cured."
553886
90% of people seroconvert - meaning develop antibodies - within one month.  Two weeks is not enough time to know for sure.\n\nIt can take up to 3 months for 98% of people, and the other 2% will know at the end of 6 months.
1011252
No. It takes about two weeks (10-14 days) for the virus to infect the initial cells. Testing for antibodies is not that acurate. It could be possible to test negative for antibodies after twenty years.
268912
Skin eruptions may appear two to 12 days after the initial exposure to the virus. \n\nThe first sign of infection is fluid accumulation (edema) at the infection site, which is quickly followed by small, grouped blisters, the characteristic HSV lesions. \n\n\nThese form on an inflamed skin base, which is more visible in dry skin areas. \n\n\nThe blisters then dry out and heal rapidly without scarring. Blisters in moist areas heal more slowly. The lesions may sometimes itch, but itching decreases as lesions heal. \n\n\nWhen the crust falls off, the lesions are no longer contagious. (The virus may still be active in nearby tissue but such persistence is rare.) The primary skin infection with either HSV-1 or HSV-2 lasts up to two to three weeks, but skin pain can last one to six weeks in a primary HSV attack. \n\n\nLymph glands near the site may be swollen as well. \n\n\nPrimary herpes is often accompanied by fever rising to about 102°F, muscle aches, headache, and flu-like malaise. These general symptoms usually resolve within a week. \n\n\nOnce HSV gains entry to a site in the body, the virus spreads to nearby mucosal areas through nerve cells. This characteristic spreading can cause fairly large infected areas to erupt at some distance from the initial crop of sores. \n\nhttp://www.gotherpes.com/doc52symptoms.sht
23162
I'm not sure I understand your question.\n\nIf you're asking how long it takes (after to exposure) for a person's blood to show antibodies (or not) to HIV, then I think the answer is probably yes. If a person is exposed to HIV, the majority of people will develop antibodies to the virus by 6  months if they are going to develop them.
135405
According to my understanding:\n\nExperience during the past 4 years with more than 14 million doses of varicella vaccine distributed in the United States indicates that vaccine-associated virus transmission to contacts is extremely rare (only 3 well-documented cases to date) and occurs only if the immunized person develops a rash (Merck and Company, Inc, unpublished data, 1999). \n\nVaricella vaccine is safe; reactions are generally mild and occur with an overall frequency of approximately 5% to 35%. Approximately 20% of immunized persons will experience minor injection site reactions (eg, pain, redness, swelling). Approximately 3% to 5% of immunized children will develop a localized rash, and an additional 3% to 5% will develop a generalized varicella-like rash. These rashes typically consist of 2 to 5 lesions and may be maculopapular rather than vesicular; lesions usually appear 5 to 26 days after immunization. However, most varicella-form rashes that occur within the first 2 weeks after varicella immunization are due to wild-type VZV.31 Although a temperature higher than 38.9°C (102°F) has been observed from 1 to 42 days after immunization in 15% of healthy immunized children, fever also occurs in a similar percentage of children receiving placebo and is not considered to be a significant adverse event of immunization.32 A temperature higher than 37.8°C (100°F) has been reported in 10% of adolescents and adults who are immunized with the vaccine. Serious adverse events, such as encephalitis, ataxia, erythema multiforme, Stevens-Johnson syndrome, pneumonia, thrombocytopenia, seizures, neuropathy, and death, have been reported rarely in temporal association with varicella vaccine. In some cases, wild-type VZV or another causal agent has been identified. In most cases, data are insufficient to determine a causal association.\n\nAlthough there has been concern about waning immunity, follow-up evaluations of children immunized during prelicensure clinical trials in the United States revealed protection for at least 11 years, and studies in Japan indicated protection for at least 20 years.19,20 However, these studies were during a period when a substantial amount of wild-type VZV was present in the community, with many opportunities for boosting of immunity by subclinical infection in immunized persons. Experience with other live virus vaccines (eg, measles, rubella) suggests that immunity remains high throughout life; the primary reason for second doses of measles vaccine is to induce protection in children who did not respond to the first dose, not because of waning immunity. Follow-up studies of clinical trials in children are being performed to determine the need, if any, for additional doses of varicella vaccine. \n\nThe varicella vaccine virus has been demonstrated to cause herpes zoster in immunocompetent and immunocompromised persons within 25 to 722 days after immunization. Data from postlicensure surveillance indicate that the age-specific risk of herpes zoster seems to be lower in immunocompetent children immunized with varicella vaccine than in children who have had natural infection. A population-based study indicated that the incidence of herpes zoster after natural varicella infection among immunocompetent children younger than 20 years of age was 68 per 100 000 person-years33 while the reported rate of herpes zoster after varicella immunization among immunocompetent persons was approximately 2.6 per 100 000 vaccine doses distributed (CDC, unpublished data, 1998). However, these rates should be compared cautiously because the former rates are based on populations monitored actively for longer periods than the passive surveillance after immunization. Wild-type VZV also has been identified in persons with herpes zoster after immunization, indicating that herpes zoster in immunized persons also may result from antecedent natural varicella infection.
1101130
In adults, there is an increased incidence of mortality, due to the possibility of developing pneumonia, as a result of the pox.  Because chicken pox is so highly contagious, you really need to take precautions not to get it.  Even if that means moving out for a time, it is worth considering.  In fact, there is a great liklihood that you may have already contracted it.  According to AetnaIntellihealth's website, 90% of the people residing in the same household as a person with it will develop it:\n\n"Because chickenpox is so contagious, 90% of a patient's family also will develop the illness if they live in the same house and are not already immune. In the past, chickenpox cases often occurred in groups (epidemics), usually during the late winter and early spring. However, the number of cases of chickenpox has dropped dramatically because of the chickenpox (varicella) vaccine, which was licensed in 1995 and is recommended for all children."\n\nHere are the symptoms:\n\n"Symptoms of chickenpox begin between 10 and 21 days after a person is exposed. The illness typically includes fever and a generally sick feeling. This is soon followed by itchy, red bumps that quickly become fluid-filled and are easily recognized as chickenpox. These skin blisters are round, about 5 millimeters to 10 millimeters across (about the size of a pencil eraser), with a red base. Sometimes, they are described as a "dew drop on a rose petal." They appear in various stages over the next few days and eventually crust over. These blisters may appear anywhere there is skin, even inside the mouth, throat or vagina. Some patients have only 50 blisters or fewer. Others have too many to count."\n\nIt's also not too late for you to acquire the vaccine:\n\n" The vaccine also is recommended when someone who has never had the disease or vaccine before has been exposed to someone with active chickenpox. This may help to prevent that person from getting the disease."\n\n~~~~~~~~~~\n\nBelow are some wonderfully informative links, that I hope you take advantage of.\n\nPlease take care.
148393
Usually 48-72 hours after exposure the first symptoms appear.\nShort term immunity develops after you get over it, but you can still give it to others.
6609
It is a infectious disease-mostly kids get--with a rash on feet, hands and mouth--it goes away in about 14 days--no big deal
999214
AS long as the place is clean it's fine.  With infection you are no longer contagious after 48 hrs of antibiotics.   A month and a half is ample time.  A bit excessive, if you ask me.  Pneumonia isn't as contagious as people think. \nhttp://www.askdrsears.com/html/8/T083800.asp\nS PNEUMONIA CONTAGIOUS?\nYes it is, but it is LESS contagious than most people think. The cold virus that started the cough in the first place is contagious. But the pneumonia part of the illness down in the lungs is far less contagious. People who are exposed to someone with pneumonia may catch the normal cough and cold symptoms of the virus, but usually don't progress to pneumonia. The formation of the pneumonia is not determined by the particular cold virus or bacteria that the person has, but rather by each person's susceptibility in their own lungs.\n\nNo need to worry, everthing should be a ok.
815839
This is the truth.  If you had chicken pox....after the rash heals, the varicella virus lays dormant in your body.  It will be there the rest of your life.  IF you get shingles, it is from the dormant virus--you didn't "catch" it from anyone.  And you are ONLY contagious to a person who has NEVER had chicken pox, which means you could give them chicken pox.....NOT shingles.  So, yes...it's true... You cannot get SHINGLES if you never had chicken pox.....but you can still get chicken pox at anytime in your life if you come in contact with it or shingles. \n\nOK?
32463
Shingles is NOT contagious.However, although shingles is not contagious, contact with a person with shingles could lead to chicken pox in someone who has never had chicken pox and has not received the varicella vaccine.\n\nShingles is not a new infection; rather, it is a second outbreak of the chicken pox virus. Some of the virus germs that cause chicken pox stay in the body, remaining inactive in the nerve cells near the spine for many years. Then the herpes zoster virus suddenly wakes up from the dormant state and grows. Once active, the germs travel along the nerve paths to the skin, leaving a path of destruction along the nerves in which they travel. The result is the pain and rash of shingles.
682478
It can take from 7 days to two weeks. Very few times, it can take longer. Go and check with your doctor if u have some kind of outbreak
431857
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.\n\nMost people diagnosed with a first episode of genital herpes can expect to have several (typically four or five) outbreaks (symptomatic recurrences) within a year. Over time these recurrences usually decrease in frequency.
570234
The IgM will persist until the antigen is removed. The presence of IgM is usually taken to mean that the infection is still active. IgM usually appear 1-2 weeks after initial exposure, while IgG appear 3-4 weeks after initial exposure.\n\nThe exact numbers may vary a little, but this is what I remember.