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What Is The Incubation Period Of Hiv

Examples For Diseases In Humans

What is the window period & incubation period of AIDS respectively ?

Due to inter-individual variation, the incubation period is always expressed as a range. When possible, it is best to express the mean and the 10th and 90th percentiles, though this information is not always available.

For many conditions, incubation periods are longer in adults than they are in children or infants.

  • ^Lesson 1, Section 9: Natural History and Spectrum of Disease, Principles of Epidemiology in Public Health Practice, Third Edition, An Introduction to Applied Epidemiology and Biostatistics, Centers for Disease Control and Prevention, May 18, 2012
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  • ^Chan, Miranda Johansson, Michael A. . “The Incubation Periods of Dengue Viruses”. PLOS ONE. 7 : e50972. Bibcode:2012PLoSO…750972C. doi:10.1371/journal.pone.0050972. PMC 3511440. PMID 23226436.
  • ^Cellulitis, Accessed 2012-05-28.
  • “Chickenpox: Practice Essentials, Background, Pathophysiology”. March 22, 2020 â via eMedicine.Cite journal requires |journal=
  • ^Azman, Andrew S. Rudolph, Kara E. Cummings, Derek A.T. Lessler, Justin . “The incubation period of cholera: A systematic review”. Journal of Infection. 66 : 432â8. doi:10.1016/j.jinf.2012.11.013. PMC 3677557. PMID 23201968.
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  • ^Common cold, The Mayo Clinic, Accessed 2012-05-28.
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  • ^Erythema Infectiosum at eMedicine
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  • How Long Does It Take For Hiv To Progress To Aids

    How long does it take for HIV to progress to AIDS? In all but a few rare cases, if left untreated, HIV will progress to a stage of infection called AIDS. This is when the immune defenses have been compromised, and the body is less able to defend itself against potentially life-threatening infections.

    Are There Symptoms In The Incubation Period

    About 50,000 people in the U.S. get hepatitis C each year. But many people donât realize it. During the early acute stage, more than 2 out of 3 people donât feel any symptoms.

    If you do have symptoms, one of the most common ones is jaundice. With jaundice, which is a sign of liver damage, you may notice that your skin or the whites of your eyes have a yellowish tinge. You may also notice other changes. Your urine may be darker. When you poop, the color may be closer to the color of clay.

    Other symptoms may include:

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    What Is The Incubation Period Of Hepatitis A Virus

    The incubation period usually lasts 2-6 weeks, and the time to the onset of symptoms may be dose related. The presence of disease manifestations and the severity of symptoms after HAV infection directly correlate with the patient’s age. In developing nations, the age of acquisition is before age 2 years. In Western societies, acquisition is most frequent in persons aged 5-17 years. Within this age range, the illness is more often mild or subclinical however, severe disease, including fulminant hepatic failure, does occur.

    What Triggers Transient Aids In The Acute Phase Of Hiv Infection And Chronic Aids At The End Of The Incubation Period

    Is it possible for the incubation period of HIV virus to ...

    Ivan Kramer

    1Physics Department, University of Maryland Baltimore County, 1000 Hilltop Circle, Catonsville, MD, USA


    Novel dynamical models are introduced demonstrating that the T helper cell density drops in the acute infection phase of HIV infection, sometimes causing transient AIDS, and at the end of the incubation period causing chronic AIDS have a common dynamical cause. The immune system’s inability to produce enough uninfected THCs to replace the infected ones it is destroying causes a drop in the THC density at any stage of HIV infection. Increases in viral infectivity, probably caused by random mutation of HIV, are shown to drive the progression of the infection. The minimum incubation period for the long term non-progressors was calculated from a novel physical model: 0.3% of infecteds have incubation periods of 23.1 years or more, and there is no biomedical difference between LTNPs and progressors. Chronic AIDS is shown to result from three random transitions linking four clinically-distinct stages of HIV infection following seroconversion.


    Copyright © 2007 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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    Difference Between Window Period And Incubation Period

    April 8, 2020 Posted by Samanthi

    The key difference between window period and incubation period is that window period is the time between infection and the lab test which can identify the infection while incubation period is the period between infection and onset of the disease.

    An infectious disease is a disease caused by a pathogenic organism such as bacteria, fungus, protozoan and virus. Infectious diseases spread directly or indirectly between people. COVID 19 is an infectious disease that transmits from person to person via respiratory droplets carrying the virus. When considering an infectious disease, there are certain time periods we can define, including incubation period, latent period, window period, period of communicability, etc. It is very important to understand these time periods in order to prevent the spreading of diseases.

    Examples Of Incubation Period In A Sentence

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    These example sentences are selected automatically from various online news sources to reflect current usage of the word ‘incubation period.’ Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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    How Is Tb Treated

    Active symptoms of TB include persistent fever, fatigue, weight loss, loss of appetite, coughing etc. In severe cases of infection, a person may bleed internally or droplets of blood can be found in phlegm. Treatment for TB usually includes a course of antibiotic drugs. A person may be required to take these medications daily for 6 months. This treatment is sufficient to eradicate the bacteria completely from your system. However, if you perform a tuberculin skin test after recovering from infection, you will still get it as positive. This is because the test checks for antibodies and not bacteria itself. These antibodies will remain with you for the rest of your life, hence you will always test positive.

    This was all about tuberculosis incubation period. Due to long incubation period, it may be difficult to detect this infection. However, if you suspect a possible exposure, then it is best to get a tuberculin test done.

    How Does Hiv Infection Spread

    Incubation period in AIDS is

    There are numerous ways to spread the HIV infection. This is especially easy to do during the HIV incubation period. It can be transferred through unprotected anal or vaginal sex, needle sharing, oral sex, from a mother to the baby during pregnancy or childbirth, or in some rare cases, even through breastfeeding. Unclean equipment used to pierce or tattoo might also be a way of getting HIV, though this is exceedingly rare.

    It is very important to remember that even during the incubation period, the virus cannot be passed to another by drinking from the same cup, shaking hands, insects, animals hugging, coughing, swimming together or sharing the same food. Remember that bodily fluids have to be exchanged, especially blood and sexual fluids, in order to pass the infection to others.

    To learn more, check out this video.

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    Early Symptoms In Primary Hiv

    The first noticeable stage is primary HIV infection. This stage is also called acute retroviral syndrome , or acute HIV infection. Because HIV infection at this stage usually causes flu-like symptoms, its possible for someone in this stage to think their symptoms are due to a severe flu rather than HIV. Fever is the most common symptom.

    Other symptoms include:

    Centers for Disease Control and Prevention , primary HIV symptoms may show up two to four weeks after initial exposure. Symptoms can continue for up to several weeks. However, some people may exhibit the symptoms only for a few days.

    People with early HIV sometimes dont show any symptoms, yet they can still transmit the virus to others. This is attributed to the fast, unrestrained viral replication that occurs in the early weeks after contracting the virus.

    Understanding Hiv And Aids

    Generally speaking, the time it takes to go from HIV infection to AIDS is around five to 10 years if no medical intervention is made. Differences in time can be due to any number of factors, including:

    • The genetic strain of HIV a person has been infected with
    • The general health of the individual
    • The place where the person lives
    • A person’s genetics or family history
    • Smoking and other personal lifestyle choices

    This is, of course, if the person receives no treatment. The picture changes entirely if he or she does.

    Since 1996, the introduction of antiretroviral drugs has dramatically altered the natural progression of HIV infection. While HIV still cannot be cured, people newly diagnosed with HIV who get treated and stay in care can be expected to have near-normal to normal life expectancies. As with other chronic diseases, early detection is key to identifying and treating the infection as soon as possible.

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    What Are The Stages Of Hiv

    HIV disease has a well-documented progression. Untreated, HIV is almost universally fatal because it eventually overwhelms the immune systemresulting in acquired immunodeficiency syndrome . HIV treatment helps people at all stages of the disease, and treatment can slow or prevent progression from one stage to the next.

    A person can transmit HIV to others during any of these stages:

    Acute infection: Within 2 to 4 weeks after infection with HIV, you may feel sick with flu-like symptoms. This is called acute retroviral syndrome or primary HIV infection, and its the bodys natural response to the HIV infection.

    During this period of infection, large amounts of HIV are being produced in your body. The virus uses important immune system cells called CD4 cells to make copies of itself and destroys these cells in the process. Because of this, the CD4 count can fall quickly.

    Your ability to spread HIV is highest during this stage because the amount of virus in the blood is very high.

    Eventually, your immune response will begin to bring the amount of virus in your body back down to a stable level. At this point, your CD4 count will then begin to increase, but it may not return to pre-infection levels.

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    Can Certain Stds Lie Dormant And Not Be Detected

    Incubation period

    In some cases, an STD may be asymptomatic because its latent, or lying dormant in your body. Latent STDs can cause someone to remain undiagnosed until symptoms begin to appear. This may put them at risk for long-term complications.

    Chlamydia, hepatitis C, HIV, HSV , and syphilis can all have periods of latency.

    The best way to ensure that dormant STDs receive the proper diagnosis and treatment is regular STD screening. The CDC recommends that all sexually active adults with new or multiple sexual partners receive at least yearly testing for most STDs, especially chlamydia and gonorrhea.

    Its also recommended that people who have sex without a condom or other barrier method receive STD testing more frequently.

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    Intrinsic And Extrinsic Incubation Period

    The terms “intrinsic incubation period” and “extrinsic incubation period” are used in vector-borne diseases. The intrinsic incubation period is the time taken by an organism to complete its development in the definitive host. The extrinsic incubation period is the time taken by an organism to develop in the intermediate host.

    For example, once ingested by a mosquito, malaria parasites must undergo development within the mosquito before they are infectious to humans. The time required for development in the mosquito ranges from 10 to 28 days, depending on the parasite species and the temperature. This is the extrinsic incubation period of that parasite. If a female mosquito does not survive longer than the extrinsic incubation period, then she will not be able to transmit any malaria parasites.

    But if a mosquito successfully transfers the parasite to a human body via a bite, the parasite starts developing. The time between the injection of the parasite into the human and the development of the first symptoms of malaria is its intrinsic incubation period.

    The specific incubation period for a disease process is the result of multiple factors, including:

    • Dose or inoculum of an infectious agent
    • Route of inoculation
    • Rate of replication of infectious agent
    • Host susceptibility
    • Immune response

    Latency Causes A Break In Symptoms

    After initial exposure and possible primary infection, HIV may transition into a stage called clinically latent infection. Its also referred to as asymptomatic HIV infection due to a noticeable lack of symptoms. This lack of symptoms includes possible chronic symptoms.

    According to, latency in HIV infection can last for 10 or 15 years. This doesnt mean that HIV is gone, nor does it mean that the virus cant be transmitted to others. Clinically latent infection may progress to the third and final stage of HIV, also referred to as AIDS.

    The risk for progression is higher if a person with HIV isnt receiving treatment, such as antiretroviral therapy. Its important to take prescribed medications during all stages of HIV even if there arent any noticeable symptoms. There are several medications used for HIV treatment.

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    How Long Do I Need To Wait Before I Test

    Thereâs a window period between exposure to HIV and a positive test because it takes time for your body to either build a response to the infection or for the virus to replicate enough for a test to detect it. HIV window periods can vary.

    For example, if you have unprotected sex on a Friday night, and get an HIV test Monday morning, the test wonât be able to detect HIV or an immune response to HIV yet. There hasnât been enough time for a positive result, even if the virus is in your body.

    To get the earliest, most accurate result, first consider when you were exposed and whether youâre showing symptoms.

    • If you know exactly when you may have come into contact with the virus, take a test 3 months after that date. Tests 3 months after exposure should be 99% accurate.
    • If you are having symptoms of HIV, see your doctor right away. Your doctor may want to use a test that can look for the virus directly in your body.

    Benefits Of Early Detection And Treatment

    Incubation Period | Know the facts | Why should we know about it ?

    If you think you may have an STD, its important to stop engaging in sexual activity and seek treatment. Early detection and treatment of STDs plays an important role in stopping the transmission of STDs between yourself, your sexual partners, and their sexual partners. In some cases, it can even save your life.

    Some of the potential risks of untreated STDs include:

    Taking care of your sexual health is important. Not everyone will voluntarily disclose their STD status to you. You can take control of your sexual health by asking questions, screening new sexual partners, and having open and honest discussions about sexually transmitted diseases.

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    Figure : Time To Develop Antibodies *

    95% people by week 4, 99% by week 6 and more than 99.9% by week 12

    Figure 8 shows the range of times that people can take to respond to HIV infection.

    The earliest marker is HIV viral load. This is in the first weeks after infection . A high viral load is related to seroconversion symptoms.

    The first HIV protein that can be measured is p24 .

    Viral load and p24 tests are not accurate for diagnosing early HIV if the results are negative.

    An HIV antibody response can be detected as early as two weeks in a few people and in more than 99.9% of people by 12 weeks. An antibody test at 4 weeks will detect 95% of infections.

    Antibody testing at 4 weeks can give you a good indication of your HIV status, but you need a test at 12 weeks after the exposure to be considered HIV negative.

    What Is The Incubation Period For Hiv

    The incubation period can vary from person to person, depending on how fast the body builds up antibodies to Human Immunodeficiency Virus . Although symptoms of HIV may not appear for years, there are different tests that can be performed to shorten the incubation period for HIV.

    The actual time from the contraction of the virus until symptoms appear can take years, according to the Center for Disease Control . Therefore, regular testing is recommended to avoid unintentionally spreading the virus.

    After contracting HIV, the body may have a window period where the disease will not show up on a test. This is because the body takes time to develop the antibodies that provide the positive test result.

    According to the CDC, the antibodies will appear on a blood test within three months for 97 percent of infected people. In rare cases, the incubation period for HIV may be as long as six months.

    A rapid detection test is available that detects the HIV virus directly, rather than the antibodies. The incubation period for HIV with an RNA test is between nine and 11 days from the time of exposure.

    If a person is infected with the HIV virus, they are still capable of transmitting it to another person even if their test has returned negative.

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