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Doctor insights on: Human T Cell Lymphotropic Virus

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Is human t cell leukemia/lymphotropic virus (htlv-1) contagious?

Is human t cell leukemia/lymphotropic virus (htlv-1) contagious?

Yes: Both htlv-1 and htlv-2 are spread by sexual transmission, from mother to child, and by exposure to infective blood through transfusions and injection drug use. In this respect the virus is contagious. It does not appear it is transmitted in any other way. ...Read more

Virus (Definition)

A virus is a small infectious agent that can replicate only inside the living cells of an organism. Viruses can infect all types of organisms, from animals and plants ...Read more


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Human immunodeficiency virus--can it mutate?

Human immunodeficiency virus--can it mutate?

Yes: Hiv mutates in response to HIV therapy. If you're being treated without a complete response (partial suppression), the virus can mutate so it can replicate in the presence of the drugs. This usually happens in people who don't take their medications properly. They can then transmit the mutant virus to others. Spontaneous mutation (mutation independent of therapy) has not been a big problem. ...Read more

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Help docs, is human t cell leukemia/lymphotropic virus type 1 (htlv-1) contagious?

Help docs, is human t cell leukemia/lymphotropic virus type 1 (htlv-1) contagious?

Yes: The virus is present in blood and can be transmitted like HIV is transmitted. See this site for more info. http://www.htlv1.eu/htlv_one.html ...Read more

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What type of cell does herpesviridae (herpesvirus) infect in humans?

What type of cell does herpesviridae (herpesvirus) infect in humans?

Skin cells: The herpes virus comes in 2 types: herpes simplex (hsv) 1&2. Antibodies (igg) to both viruses can be tested to see if you have lasting immunity and (igm) short-term antibodies check to see if you have had a recent infection. Unfortunately the igg levels can not tell how long ago you were exposed. Also herpes 1 & 2 viruses can cause either oral or genital herpes. Hope that helps. ...Read more

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The human immunodeficiency virus (hiv) infects helper t cells. What is the role of these cells?

The human immunodeficiency virus (hiv) infects helper t cells. What is the role of these cells?

Cellular immunity: These are cells that work as part of the cellular immune system, fighting certain fungal (e.g. Cryptococcus), viral (e.g. Herpesviruses), parastic (e.g. Toxoplasma), and bacterial (e.g. Tuberulosis) infections. The cellular immune system also helps to prevent certain cancers, such as lymphomas. ...Read more

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How did human immunodeficiency virus (hiv) evolve?

How did human immunodeficiency virus (hiv) evolve?

Evolution: It came from a simian precursor transmitted to humans by one of several mechanisms. This virus mutates continuously and the form to which it mutates which is best capable of surviving under the circumstances is the one which will be reproduced and multiply within infected cells. Unless of course you are a creationist. ...Read more

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Which type of cells does ebola virus infect?

Which type of cells does ebola virus infect?

Several types...: Ebola virus is the cause of a very serious form of hemorrhagic febrile illness that has a very high mortality rate. Ebola virus can infect several types of human cells. One of the most important of these is human lymphocytes. ...Read more

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Does the HIV virus infect the germ cell spermatozoa?

Likely not.: It is most likely that the virus may be in the white blood cells within the seminal fluid. Whether they nonspecifically adhere to the sperm as many dna viruses do, is less clear. Regardless, many fertility programs around the world have developed ways to "wash" sperm from HIV positive men and have used it to make healthy babies. ...Read more

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How does HIV cause polyclonal cell activation?

How does HIV cause polyclonal cell activation?

B-cells: The ways in which HIV and hiv-infected immune cells cause overgrowth of uninfected b-cells, making them divide (polyclonal) and overfunction (polyclonal gammopathy, b-cell quasi-lymphomas) are coming to be known and are hugely complex. Best recent review http://www.Nature.Com/nri/journal/v9/n4/execsumm/nri2524.Html. ...Read more

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What is the origin of human t-lymphotrophic virus? Did it originate from primates (simian viruses?)?

Probably: The human t-lymphotropic virus type i is a human RNA retrovirus that is known to cause adult t-cell leukemia and lymphoma, and a demyelinating disease called htlv-i associated myelopathy/tropical spastic paraparesis. Htlv-i is one of a group of closely related primate t lymphotropic viruses. The ones that infect old-world primates are called simian t-lymphotropic viruses. ...Read more

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In what viral group is human papilloma virus classified?

In what viral group is human papilloma virus classified?

HumanPapillomaVirus: Human papilloma viruses is the name of a large group of viruses. There are about 100 subtypes of human papilloma viruses; almost half can occasionally cause cancer. For example, the virus that causes ordinary skin warts (including plantar warts) is called hpv-1. Two others, hpv-16 and hpv-18, are responsible for a majority of cervical cancers and are components of both of the hpv vaccines. ...Read more

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What is HPV [human papilloma virus]?

An infection.: Hpv (human papilloma virus) is an infectious organism. It is a dna virus that is spread by human to human contact including sexual contacts. Some high risk strains of this virus are associated with cervical, vaginal, anal, and oral warts, precancers and cancers. ...Read more

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How is human parvo virus transmitted?

How is human parvo virus transmitted?

Fifth disease: Here is a nice discussion by the cdc on your question. http://www.cdc.gov/parvovirusb19/fifth-disease.html. ...Read more

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What causes the human immunodeficiency virus?

What causes the human immunodeficiency virus?

HIV: The obvious answer is that HIV causes it. But perhaps you meant "how do you get it?" you get HIV by having unsafe sex or by sharing needles/syringes by someone else who has it. ...Read more

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How is the human immunodeficiency virus (hiv) transmitted?

Sharing body fluids: Hiv is a sexually transmitted infection. It can also be spread by contact with infected blood, or from mother to child during pregnancy, childbirth or breast-feeding. It can take years before HIV weakens the immune system to the point that the patient has aids. There is no cure for hiv/aids, but there are medications that can dramatically slow the progression of the disease. ...Read more

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How can th HPV human papilloma virus effect men?

Often no symptoms...: Most men with hpv infection have no signs or symptoms. Hpv can infect the skin of the penis / scrotum / perianal areas and can cause warts, but many male patients who have hpv have no symptoms. Hpv can also cause dysplasia (precancer) and true cancer at these sites. In addition, hpv can infect the lips, oral cavity, tongue / tonsils and can cause warts, precancer, and cancer in these sites too. ...Read more

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Help docs, is human papilloma virus curable?

Help docs, is human papilloma virus curable?

Define cure ?: The HPV and associated skin or other signs can clear over time in most people with a good immune system However, it is part of a family of viruses that can hibernate and re-emerge later. The shedding of viral particles is also intermittent. My assumption is that it stays with us forever, but for most is never a problem. ...Read more

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How does the human immunodeficiency virus cause AIDS?

How does the human immunodeficiency virus cause AIDS?

Attacks T cells: T lymphocytes, part of the white blood cells, are the main cells in the specialized immune system, Especially the T helper cells, so when attacked the HIV virus, the whole immune system becomes deranged, hence the development of AIDS, ...Read more