Tikfollowers

Aids virus. id/8tnk3ya/import-bookmarks-safari-ipad.

Oct 7, 2015 · But in 1989, NIH researchers made several major discoveries about how the human immunodeficiency virus (HIV) destroys the body’s immune system and ultimately leads to full-blown AIDS. Common examples of contagious viral diseases include the flu, the common cold, HIV, and herpes. HIV attacks and destroys the infection-fighting CD4 cells ( CD4 T lymphocyte) of the immune system. Symptoms of HIV infection What are HIV and AIDS? Human immunodeficiency virus (HIV) is a virus that affects your immune system. By the late 1980s it had become a public health crisis. In 1996, NIH-funded scientists discovered a new class of drugs, known as protease inhibitors. It causes AIDS (acquired immunodeficiency syndrome), which is life-threatening. HIV, or human immunodeficiency virus, is the virus that causes AIDS (acquired immunodeficiency syndrome) and can be transmitted during sexual intercourse; by sharing syringes; or perinatally during pregnancy, childbirth or breastfeeding. HIV/AIDS and Pregnant Australian Women [ edit] By the end of 2021, there were estimated to be 3,360 women living with HIV, or 12% of all people living with HIV. The destruction of these cells leaves people with HIV vulnerable to other pathogens and complications. There is currently no evidence that FIV can infect or cause disease in humans. Diarrhea. However, HIV was propagating in the country before that. HIV (Human Immunodeficiency Virus) is composed of two strands of RNA, 15 types of viral proteins, and a few proteins from the last host cell it infected, all surrounded by a lipid bilayer membrane. HIV lies dormant inside a small number of cells in the body, resulting in viral reservoirs. The capsid is the container for the virus’s genetic material. Symptomatic HIV infection. Since then, advances in HIV treatment has turned it from a deadly infection to a lifelong condition that can be managed. [2] [3] Viruses are found in almost every ecosystem on Earth and are the most numerous type of biological entity. However, if left untreated, it can cause a weakened immune system or acquired immune deficiency syndrome (AIDS). Now, follow each stage in the HIV life cycle as HIV attacks a CD4 cell and uses the machinery of Mar 26, 2019 · ARC is a condition caused by the AIDS virus in which the patient tests positive for AIDS infection and has a specific set of clinical symptoms. Watch a video to learn about the approaches NIAID is taking to achieve a cure for HIV. Early HIV symptoms are called acute retroviral syndrome or acute HIV infection. Without treatment, HIV can gradually destroy the immune system and advance to AIDS. There is no cure for HIV/AIDS, but antiretroviral (ARV) prescription medications allow people with HIV to live Apr 20, 2023 · HIV — short for human immunodeficiency virus — is a virus that affects the immune system — more specifically, white blood cells known as CD4 cells, or T-cells, that are part of the immune 6 days ago · AIDS, transmissible disease of the immune system caused by the human immunodeficiency virus ( HIV ). Sore joints, muscles or throat. Many people involved in HIV cure research acknowledge Jun 14, 2021 · Pride. Testing is recommended as a part of routine healthcare. Without effective treatment of a combination of antiretroviral (ARV) drugs, the immune system will become Aug 16, 2021 · The treatment for HIV is called antiretroviral therapy (ART). Together, these molecules allow the virus to infect cells of the immune system and force them to build new copies of the virus. May 21, 2024 · The virus is a master of evasion, dodging the immune system by coating itself in sugars that resemble those made by the body, Related: We could end the AIDS epidemic in less than a decade Overview. However, the research, development, and widespread availability of highly active antiretroviral therapies (ARTs) have helped contain the HIV pandemic The HIV. Jan 24, 2024 · Overview. Mar 7, 2024 · Cytomegalovirus is a common virus. This number is staggering, and if left unchecked, HIV could become a global health crisis. Kaposi sarcoma (KS) develops from the cells that line lymph or blood vessels. Human immunodeficiency virus (HIV) is the virus that causes HIV infection, which can develop into acquired immune deficiency syndrome (AIDS). It's caused by the human immunodeficiency virus, also called HIV. It harms your immune system by destroying CD4 cells. Within the CD4 cell, HIV replicates and in turn, damages and destroys the cell. This path will also help prepare for and tackle future pandemics and advance progress towards achieving the Sustainable Development Goals. During this early period, HIV is present in large amounts in genital fluids and in blood and can be passed to others. ART is recommended for everyone who has HIV. This puts you at risk for other infections and diseases. A mosquito’s feeding The seven stages of the HIV life cycle are: 1) binding, 2) fusion, 3) reverse transcription, 4) integration, 5) replication, 6) assembly, and 7) budding. May 21, 2023 · HIV and AIDS are related, but they’re not the same. Once people get HIV, they have it for life. If a person has HIV and is not on HIV treatment, the virus will weaken the body’s immune system and the person will progress to AIDS. About 37 million people around the world are currently living with AIDS. Protecting yourself from HIV begins with understanding how the virus is spread. If HIV isn't treated, it can take years before it weakens the immune system enough to become AIDS. May 22, 2023 · The virus can grow out of control in people with HIV, so see a dermatologist for treatment right away. When it comes to HIV transmission, it’s important to know what Scientists have argued about the origin of the AIDS epidemic since it surfaced in 1981, but this much is widely accepted today: Sometime around 1931, HIV-1, the main virus driving the epidemic, likely entered humans from chimpanzees, which are infected with a related virus called SIVcpz. Jul 13, 2017 · HIV and AIDS began spreading among humans in the 1920s and became a public health crisis by the 1980s, before the first effective treatments emerged. HIV stands for human immunodeficiency virus. We do not know exactly how the virus damages brain cells. Your immune system is a complex network of organs, tissues and cells, called white blood Jul 26, 2023 · HIV, the virus that causes AIDS (see box), has become one of the world’s most serious health and development challenges since the first cases were reported in 1981. As soon as HIV enters the body, it begins to disable or destroy these cells, even when you are not experiencing any symptoms. You can have HIV without any symptoms. Weight loss. Other examples of STDs are chlamydia, gonorrhea, human papillomavirus (HPV) infection, and syphilis. The loss of these cells makes it hard for your body to fight off infections and certain HIV-related cancers. AIDS, or acquired immunodeficiency syndrome, is the final stage of HIV, or human immunodeficiency virus infection, in which CD4 white blood cells, or T-cells of the body's immune system, are considerably infected and destroyed. Getting tested and starting treatment early gives you the best chance of living a long life. Men who inject drugs accounted for 4% (1,300) of estimated new HIV infections. See also: Timeline of early HIV/AIDS cases. A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Because they can’t get an HIV infection, mosquitoes can’t transmit HIV to humans. HIV is a manageable chronic condition. These concerns have percolated in the background of the race for a vaccine to stem the coronavirus pandemic, but now the AIDS is the most advanced stage of HIV infection. gov or call 1-800-232-0233 to find a COVID-19 vaccine near you. If you have questions about getting COVID-19 vaccine and whether it is right for you, talk to your health care provider. But there is a global commitment to stopping new HIV infections and ensuring that everyone with HIV has access to HIV treatment. The human immunodeficiency virus (HIV) is a type of virus called a retrovirus. While AIDS cannot be transmitted from 1 person to another, the HIV virus can. CMV spreads easily through an infected person's saliva or other body fluids. ART involves taking a combination of HIV medicines (called an HIV treatment regimen) every day. Usually, people who have just been diagnosed with HIV take between 1 and 4 pills a day. HIV (human immunodeficiency virus) is a virus that attacks the body's immune system. [2] A vírus leggyakrabban szexuális úton terjed és egyaránt megtalálható a Oct 9, 2023 · Medications will help control the virus, keep your infection from becoming AIDS, and help you stay healthy and live longer. Its presence Apr 22, 2024 · In 2022, PWID accounted for 7% (2,300) of the 31,800 estimated new HIV infections. When taken as prescribed, HIV medicine can make the amount of virus in your body ( viral load) so low that a test can't detect it ( undetectable viral load ). Women who inject drugs accounted for 3% (1,000) of estimated new HIV infections. Aug 10, 2021 · However, even if people with HIV feel healthy, the virus is still affecting their bodies. Each molecule in the Sep 20, 2022 · A typical initial HIV regimen includes 3 HIV medications from a minimum of 2 drug classes. AIDS is the most advanced stage of HIV (human immunodeficiency virus). [3] Although FIV is similar to human immunodeficiency virus (HIV) and causes a feline disease similar to acquired immune deficiency syndrome (AIDS) in humans, it is a highly species-specific virus that infects only felines. These are a type of white blood cells that fight infection. These cells help your body stay healthy by fighting off disease. FIV is relatively uncommon, but it can have serious impacts on a cat’s health and well-being. The right treatment can help prevent illness and keep HIV from progressing. It can cause warts on the anus Jun 15, 2022 · Stage 3: AIDS. have it by age 40, but people of any age can get it. There is no cure for HIV, but treatment with HIV medicines (called antiretroviral therapy or ART) can slow or prevent HIV from advancing from one stage to the next. Without treatment, HIV can gradually destroy the immune system, causing health Oct 19, 2023 · AIDS 101. HIV, the virus that causes AIDS, is one of the world’s most serious public health challenges. It’s transferred through bodily fluids like semen, vaginal fluids, and blood. This reduction of transmission has become a popular use of antiretroviral therapy for HIV-positive individuals with an HIV-negative partner. HIV is a virus that attacks the immune system and can lead to AIDS, a clinical diagnoses that indicates an advanced stage of HIV. But proper medical care can control the virus. But many of them are. Since the first AIDS cases were reported in 1981, HIV/AIDS has been one of humanity’s deadliest Jun 30, 2023 · The virus reproduces rapidly in the body, causing severe flu-like symptoms. People on ART take a combination of HIV medicines called an HIV treatment regimen. HIV is a sexually transmitted infection, but it can progress to a disease called acquired immunodeficiency syndrome (AIDS) when HIV infection is untreated with HIV medicines. Ultimately, people infected with HIV can become very sick from opportunistic infections May 31, 2019 · The virus that causes AIDS is called HIV, or human immunodeficiency virus. To understand each stage in the HIV life cycle, it helps to first imagine what HIV looks like. Visna-maedi virus. View a timeline of the current Ending the HIV Epidemic initiative. There's currently no cure for HIV, but there are The management of HIV/AIDS normally includes the use of multiple antiretroviral drugs as a strategy to control HIV infection. HIV medicines help people with HIV live May 21, 2023 · Each drug fights the virus in your body in a slightly different way. The human immunodeficiency viruses ( HIV) are two species of Lentivirus (a subgroup of retrovirus) that infect humans. 1-8 Despite this shedding of infected blood or exudate, saliva of infected individuals usually contains only noninfectious May 5, 2023 · HIV/AIDS. The HIV virus actively multiplies, infects and kills cells of the immune system called CD4+T cells, which are the immune system's key infection fighters. Infection with this virus results in the progressive depletion of the immune system, leading to May 6, 2024 · The human immunodeficiency virus (HIV) was first identified in 1983 and has since claimed approximately 40. Research shows that a combination, or "cocktail," of drugs is the best way to control HIV and lower the chances that the virus The extraordinary story of a virus's spread -- infecting over 70 million people -- and how the world has been unable to stop it. If you have HIV and you are not on HIV treatment, eventually the virus will weaken your body’s immune system and you will progress to AIDS (acquired immunodeficiency syndrome). The first part would involve drugs that make virus cells Human immunodeficiency virus (HIV) is a virus that attacks the body's immune system. Antiretroviral medicines slow the rate at which the virus grows. ART cannot cure HIV, but HIV medicines help people with HIV live longer, healthier lives. Feb 9, 2024 · Acquired immunodeficiency syndrome (AIDS), is an ongoing, also called chronic, condition. The virus can be passed in only certain ways: During sex with a person infected with HIV. In a photograph from 1983 displayed here, a female CDC research chemist conducts tests on biological fluids from . Jan 11, 2023 · Tiredness. View Larger Download. These activities are “lower risk” — they’ve only caused a few reported cases of HIV (out of millions): "French” or deep kissing (if the person with HIV has sores or bleeding in their mouth) vaginal sex with a condom and/or PrEP. In fact, many people with HIV live for years without developing AIDS. [61] In 2013, the median age of diagnosis for women was 30 years of age. It protects the virus from being destroyed by the immune system Nov 28, 2023 · These include drugs that eliminate the risk of parent-to-child transmission; antiretroviral therapy, which by suppressing the virus, both protects the infected person from severe illness and death Feb 9, 2024 · This test measures the amount of virus in your blood. That makes children with HIV more vulnerable to infections and disease. HIV attacks the immune system by entering and destroying CD4+ T cells, a type of white blood cell that is vital to fighting off infection. 4 million lives worldwide (as of 2022). Apr 11, 2024 · It’s also known as a sterilizing cure or complete cure. The three stages of HIV infection are (1) acute HIV infection, (2) chronic HIV infection, and (3) acquired immunodeficiency syndrome (AIDS). Other types of Kaposi sarcoma, non-Hodgkin lymphoma, and cervical cancer are considered to be AIDS-defining cancers. If treatment is stopped, these reservoirs can become active and start producing HIV. After starting HIV treatment, the goal is to have a viral load so low that it doesn't show up on the test, called undetectable. Fatigue. HIV is not spread through casual contact such as sharing Apr 11, 2024 · HIV, or human immunodeficiency virus, is the virus that causes acquired immune deficiency syndrome (AIDS). HIV is called an immunodeficiency virus because it weakens (causes deficiency) of your immune system. government did How are HIV and AIDS treated? The most effective treatment for HIV is antiretroviral therapy (ART). Jun 7, 2022 · HIV treatment involves taking highly effective medicines called antiretroviral therapy (ART) that work to control the virus. Oral yeast infection, also called thrush. The latest statistics on HIV around the world from UNAIDS Exit Disclaimer include: Antiretroviral therapy stops HIV from replicating (making copies of itself), but effective treatment does not completely eliminate the virus from the body. It is the final stage of infection with HIV. However, ARC patients' symptoms are often less Mar 15, 2021 · HIV is a virus that attacks the immune system. ELISA: The First HIV Blood Test. As the virus continues to multiply and destroy immune cells, you may get mild infections or long-term symptoms such as: Fever. Your immune system helps defend you against infection and cancer. using clean sex toys. 2: Chronic HIV: Chronic and persistent herpes simplex virus (HSV) is an AIDS-defining condition. HIV, which is the virus that may lead to AIDS, remains a global epidemic today. HIV damages the immune system so that the body is less able to fight infection and disease. Although this treatment is not curative, it can provide longer lives for patients and reduce HIV transmission. HIV is a retrovirus that infects cells of the human immune system (mainly CD4-positive T-cells and macrophages—key components of the cellular immune system) and destroys or impairs their function. In May 16, 2024 · There is no evidence that COVID-19 vaccines interfere with ART to treat HIV or PrEP to prevent HIV. Rash. Upon infection with HIV, a person's immune system kills off nearly all of the virus and The Duesberg hypothesis is the claim that AIDS is not caused by HIV, but instead that AIDS is caused by noninfectious factors such as recreational and pharmaceutical drug use and that HIV is merely a harmless passenger virus. HIV is a virus. The reasons for acquiring the HIV blood test is spread across three circumstances. Learn how the human immunodeficiency virus (HIV) causes AIDS, where HIV may have originated, and how AIDS has become one of the worst pandemics in modern history. Feline Immunodeficiency Virus (FIV) is commonly known as Feline AIDS because of its similarities to Human Immunodeficiency Virus (HIV). Once HIV enters the body, it infects large numbers of CD4+ cells and rapidly spreads throughout the body and into many organ systems. With proper care, cats with FIV can live many years and usually can share a household Apr 12, 2024 · HIV treatment (antiretroviral therapy or ART) involves taking medicine prescribed by a health care provider. AIDS is the most advanced stage of HIV infection. Approximately 86 million Dec 11, 2023 · The person-to-person spread of human immunodeficiency virus (HIV) is called HIV transmission. HIV is a lentivirus (literally meaning “slow virus”; a member of the retrovirus family) that slowly attacks and destroys the immune system, the body’s defense against infection, leaving an individual vulnerable to a variety of other Jan 11, 2021 · Instead, the virus just gets broken down and digested in the mosquito’s stomach. [1] Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. HIV and the syndrome it causes, AIDS, began spreading in the United States in the early 1980s. What is HIV? The human immunodeficiency virus (HIV) targets cells of the immune system, called CD4 cells, which help the body respond to infection. Different combinations of HIV medicines work for different people, so the medicine you take will be individual to you. Medicine resistance. Without treatment, it can lead to AIDS (acquired immunodeficiency syndrome). May 21, 2023 · AIDS dementia complex is caused by the HIV virus itself, not by the opportunistic infections that occur commonly in advanced HIV. Symptoms of AIDS can include: Rapid weight loss; Recurring fever or profuse night sweats; Extreme and A HIV-fertőzés okozza az AIDS (szerzett immunhiányos szindróma) betegséget. From HIV mother to child either during pregnancy, labor or breastfeeding. The loss of CD4 cells makes it difficult for the body to fight off infections, illnesses, and certain cancers. Not everyone who has Jul 13, 2023 · GENEVA, 13 July 2023—A new report released today by UNAIDS shows that there is a clear path that ends AIDS. Scientists believe it would take a two-part treatment to completely wipe out HIV. 1 day ago · July 2, 2024 — A major challenge in developing a vaccine for HIV is that the virus mutates fast -- very fast. There is currently no effective cure. HIV harms your immune system by destroying a type of white blood cell that helps your body fight infection. The symptoms are the body's natural response to the virus. We dispel the myths surrounding HIV and AIDS and provide research-backed information about what life is like, including symptoms, treatments, and more. When used in combination with other AIDS drugs, these medicines Mar 14, 2024 · HIV stands for human immunodeficiency virus. The latest statistics on HIV around the world from UNAIDS Exit Disclaimer include: Jun 6, 2022 · Human immunodeficiency virus (HIV) is the virus that causes acquired immune deficiency syndrome (AIDS). This is the late stage of HIV infection. Untreated HIV usually leads to acquired immunodeficiency syndrome (AIDS) within 10 years. Painful, blistering rash: It could be shingles if you’ve ever had chickenpox -- the same May 31, 2024 · HIV stands for human immunodeficiency virus. Human papilloma virus (HPV) – This condition is considered the most common sexually transmitted disease (STD) in the United States. People with HIV may have symptoms in the very beginning of their infection, like swollen glands, fever, headaches, and muscle soreness. [1] [2] [3] This gave rise to the pandemic form of HIV Aug 24, 2022 · The key with Johnson and others has been preventing their incurable disease from progressing into AIDS. The human immunodeficiency virus, or HIV HIV/AIDS. Initially the U. Over time, they cause acquired immunodeficiency syndrome (AIDS), [1] [2] a condition in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive. The use of multiple drugs that act on different viral targets is known as highly active antiretroviral therapy Jun 16, 2022 · How Do You Get AIDS? You can’t “catch” AIDS, which stands for acquired immunodeficiency syndrome. For this reason, NIAID invests in basic and clinical research aimed at developing a safe, affordable and scalable cure for HIV and AIDS. By sharing a contaminated needle, such as through illicit drug use. [1] Az AIDS lefolyása során az immunrendszer fokozatosan, általában 9-11 év alatt leépül és a fellépő opportunista fertőzések, tumorok a beteg halálához vezetnek. It gradually destroys a type of immune cell known as CD4. It’s possible to also experience a variety of symptoms when the virus is transmitted. HIV can be transmitted only in certain body fluids from a person who has HIV. Severe conditions are more common in the advanced stage of AIDS. Prevention of HIV/AIDS. Many people with HIV get flu-like symptoms of it early on, but some people don't. The successes of antiretroviral therapy have reduced Aug 26, 2021 · When untreated, an STI can become a disease. Apr 19, 2019 · The Truth About Feline AIDS. What is AIDS? AIDS stands for acquired immunodeficiency syndrome. With treatment, people living with HIV can have long and healthy lives. Swollen lymph glands. May 1, 2024 · FIV (feline immunodeficiency virus) is the virus that can eventually progress to feline acquired immunodeficiency syndrome (similar to AIDS in humans ). Over time, HIV wears down the immune system by destroying the CD4 (T) cells that fight disease and infection. Over half of adults in the U. HIV/AIDS. As those names imply, infection with FIV weakens a cat’s immune system, which makes it much more likely that they’ll come down with bacterial infections, certain types of cancer, autoimmune AIDS (acquired immune deficiency syndrome) is the name used to describe a number of potentially life-threatening infections and illnesses that happen when your immune system has been severely damaged by the HIV virus. HIV disease is caused by infection with HIV-1 or HIV-2, which are retroviruses in the Retroviridae family, Lentivirus genus. Last updated 2021 Oct 19, 2020 · Certain COVID-19 vaccine candidates could increase susceptibility to HIV, warns a group of researchers who in 2007 learned that an experimental HIV vaccine had raised in some people the risk for infection with the AIDS virus. An HIV infection doesn’t necessarily progress to stage 3. In order to understand how HIV and AIDS are connected we need to take a closer look at how the immune system works. HIV may not show symptoms initially. Swollen lymph glands, which are often one of the first symptoms of HIV infection. HIV weakens your immune system by destroying your T-cells until you are unable to fight off even minor illnesses. Once it can no longer be measured it's Oct 12, 2021 · AIDS was first identified in the United States in 1981. Nov 15, 2023 · The Global HIV and AIDS Epidemic. The Age of AIDS - The extraordinary story of a virus's spread Jun 21, 2023 · This means they aren’t always spread from person to person. HUMAN immunodeficiency virus (HIV) transmission from oral secretions of the millions of HIV-viremic individuals during kissing, dental treatment, biting, and aerosolization is a rare event, even when infectious HIV is shed into the oral cavity by infected blood or exudate. People can get or transmit HIV only through specific activities, such as sex or injection drug use. HIV may kissing. gov Timeline reflects the history of the domestic HIV/AIDS epidemic from the first reported cases in 1981 to the present—where advances in HIV prevention, care, and treatment offer hope for a long, healthy life to people who are living with, or at risk for, HIV and AIDS. HIV is a virus that transmits via Human immunodeficiency virus (HIV) is a blood-borne virus typically transmitted via sexual intercourse, shared intravenous drug paraphernalia, and during the birth process or via human milk (vertical transmission). [1] The hypothesis was popularized by Peter Duesberg, a professor of biology at University of California, Berkeley, from Mar 26, 2019 · Still, a cure would facilitate the global eradication of HIV/AIDS. in the early 1980s. In CDC’s immunology lab, scientists began working with AIDS specimens as early as July 1981 to understand how the immune systems of young, healthy men were so compromised by the mystery illness. This greatly reduces your chances of opportunistic infection and other HIV -related complications. In the United States, the most common type of KS is related to infection with both the human herpes virus 8 (HHV-8) and HIV virus. They’ll also lower your risk of spreading HIV to other people A virus is a small infectious organism that can only replicate inside living cells of other organisms; in HIV’s case, human immune cells. Researchers estimate that some time in the early 20th century, a form of Simian immunodeficiency virus found in chimpanzees (SIVcpz) first entered humans in Central Africa and began circulating in Léopoldville (modern-day Kinshasa) by the 1920s. Some Like many STDs, AIDS symptoms in women are quite similar to the symptoms of AIDS in all genders. ART is recommended for everyone with HIV, and people with HIV should start ART as soon as possible after diagnosis, even on that same day. This is a combination of several medicines that aims to control the amount of virus in your body. It may cause AIDS after you’ve been infected for several years and it’s weakened your immune system. [1] There are several classes of antiretroviral agents that act on different stages of the HIV life-cycle. More-serious or longer lasting symptoms Dec 1, 2021 · The minimal and optimal criteria for an acceptable target product profile for an HIV cure, including the duration and level of virus control off ART, has recently been developed and published by Apr 24, 2020 · HIV compromises the immune system and may result in opportunistic infections that cause many symptoms. Visit vaccines. The amount of HIV virus in your blood (viral load) is measured to see how well treatment is working. HIV can be spread through unprotected sexual intercourse; while sharing needles and syringes; or from mother to child Feb 23, 2023 · HIV is a virus, and AIDS is the condition the virus may cause. Taking these medicines can reduce the amount of virus in your body and help you Nov 1, 2023 · The AIDS epidemic began in the United States in the 1980s. ART also reduces the risk of HIV transmission. Herpes simplex – This virus causes genital herpes, which are painful blisters in the genital area, or cold sores. Kaposi sarcoma. S. [ 1, 2] Aug 3, 2022 · AIDS, the disease caused by HIV, first emerged in the U. Although a person initially becomes infected with one or a few HIV strains, the Jan 11, 2023 · HIV is a virus that weakens your immune system. Estimated HIV infections among people who inject drugs in the US. having oral sex with a condom or dental dam. wl wt bb xd hj fn mg oi cn mi