HIV/AIDS in the United States
The AIDS epidemic, caused by HIV (Human Immunodeficiency Virus), found its way to the United States as early as 1960, but was first noticed after doctors discovered clusters of Kaposi's sarcoma and pneumocystis pneumonia in homosexual men in Los Angeles, New York City, and San Francisco in 1981. Treatment of HIV/AIDS is primarily via a "drug cocktail" of antiretroviral drugs, and education programs to help people avoid infection.
Initially, infected foreign nationals were turned back at the U.S. border to help prevent additional infections. The number of U.S. deaths from AIDS has declined sharply since the early years of the disease's presentation domestically. In the United States in 2016, 1.1 million people aged over 13 lived with an HIV infection, of whom 14% were unaware of their infection.  Gay and bisexual men, African Americans, and Latinos remain disproportionately affected by HIV/AIDS in the U.S.
The overall death rate among persons diagnosed with HIV/AIDS in New York City decreased by sixty-two percent from 2001 to 2012. 
After the HIV/AIDS outbreak in the 1980s, various responses emerged in an effort to alleviate the issue.  These included new medical treatments,  travel restrictions,  and new public health policies  in the United States.
Great progress was made in the U.S. following the introduction of three-drug anti-HIV treatments ("cocktails") that included antiretroviral drugs. David Ho, a pioneer of this approach, was honored as Time Magazine Man of the Year for 1996. Deaths were rapidly reduced by more than half, with a small but welcome reduction in the yearly rate of new HIV infections. Since this time, AIDS deaths have continued to decline, but much more slowly, and not as completely in Black Americans as in other population segments.  
In 1987, the Department of Health and Human Services (HHS) included HIV in its list of “communicable diseases of public health significance,” denying immigrants and short term foreign visits from anyone who tested positive for the virus.   In 1993, the US Congress passed the National Institutes of Health Revitalization Act of 1993, removing the HHS’ authority to dictate HIV as a “public health significance,” and explicitly including HIV as a cause for denying immigrants and foreign visitors entry into the US.   Anyone seeking US citizenship during the HIV ban was required to undergo a medical exam during the legalization process - testing positive would permanently deny the applicant entry into the country.  The law extended to include medication, where foreign travelers could be arrested for having antiretroviral drugs in their carry-on luggage. A famous example was in 1989, when a Dutch traveler to Minnesota was arrested for “several days” because he was carrying AZT in his luggage. 
During the turn of the 21st century, people who were HIV positive and seeking temporary visas or vacationing to the US had to avoid revealing their status on application forms, and either plan for their medication to be sent to the US or stop taking their medication.  Eventually the US began offering temporary admission waivers for people who were HIV positive. As stated in an interoffice memorandum in 2004, foreign nationals who were HIV positive could qualify for the waiver for either humanitarian/public interest reasons, or being “attendees of certain designated international events held in the United States”. 
In early December 2006, President George W. Bush indicated that he would issue an executive order allowing HIV positive people to enter the United States on standard visas. It was unclear whether applicants would still have to declare their HIV status.  However, the ban remained in effect throughout Bush's presidency.
In August 2007, Congresswoman Barbara Lee of California introduced H.R. 3337, the HIV Nondiscrimination in Travel and Immigration Act of 2007. This bill allowed travelers and immigrants entry to the United States without having to disclose their HIV status. The bill died at the end of the 110th Congress. 
In July 2008, President George W. Bush signed H.R. 5501 that lifted the ban in statutory law. However, the United States Department of Health and Human Services still held the ban in administrative (written regulation) law. New impetus was added to repeal efforts when Paul Thorn, a UK tuberculosis expert who was invited to speak at the 2009 Pacific Health Summit in Seattle, was denied a visa due to his HIV positive status. A letter written by Mr. Thorn, and read in his place at the Summit, was obtained by Congressman Jim McDermott, who advocated the issue to the Obama administration's Health Secretary. 
On October 30, 2009 President Barack Obama reauthorized the Ryan White HIV/AIDS Bill which expanded care and treatment through federal funding to nearly half a million.  The Department of Health and Human Services also crafted regulation that would end the HIV Travel and Immigration Ban, effective in January 2010.  On January 4, 2010, the United States Department of Health and Human Services and Centers for Disease Control and Prevention removed HIV infection from the list of " communicable diseases of public health significance," due to its not being spread by casual contact, air, food or water, and removed HIV status as a factor to be considered in the granting of travel visas, disallowing HIV status from among the diseases that could prevent people who were not U.S. citizens from entering the country. 
Since the beginning of the HIV epidemic, several U.S. presidents have attempted to implement a national plan to control the issue. In 1987, President Reagan created a Presidential Commission on the HIV Epidemic. This commission was recruited to investigate what steps are necessary for responding to the HIV outbreak, and the consensus was to establish more HIV testing, focus on prevention and treatment as well as expanding HIV care throughout the U.S.  However, these changes were not implemented during this time, and the commission recommendations were largely ignored.
Another attempt to respond to the HIV outbreak took place in 1996, when President Clinton established the National AIDS Strategy, which aimed to reduce number of infections, enhance research on HIV treatment, increase access to resources for people affected by AIDS, and also alleviate the racial disparities in HIV treatment and care.  Similarly to Reagan's plan, the National AIDS Strategy was not successfully enforced, providing only objectives without a specific action plan for implementation.
In 2010, President Obama created the National HIV/AIDS Strategy for the United States (NHAS), with its three main objectives being to reduce the annual number of infections, reduce health disparities, and increase access to resources and HIV care.  However, this new strategy differs in that it includes an Implementation Plan, with a timeline for achieving each of the three goals, as well as a document outlining the specific action plan that will be used. 
President Trump announced a plan in his 2019 State of the Union Address to stop new HIV infections in the United States by 2030, though critics pointed to the President's policies reducing access to health insurance, anti-immigrant and anti-transgender policies as undermining this goal.  The Department of Health and Human Services issued grants to 32 HIV "hotspots" in 2019, and Congress earmarked over $291 million for the president's plan in FY2020. 
One of the best known works on the history of HIV is the 1987 book And the Band Played On by Randy Shilts. Shilts contends that Ronald Reagan's administration dragged its feet in dealing with the crisis due to homophobia, while the gay community viewed early reports and public health measures with corresponding distrust, thus allowing the disease to infect hundreds of thousands more. This resulted in the formation of ACT-UP, the AIDS Coalition to Unleash Power by Larry Kramer. Galvanized by the federal government's inactivity, the movement by AIDS activists to gain funding for AIDS research, which on a per-patient basis out-paced funding for more prevalent diseases such as cancer and heart disease, was used as a model for future lobbying for health research funding. 
The Shilts work popularized the misconception that the disease was introduced by a gay flight attendant named Gaëtan Dugas, referred to as " Patient Zero," although the author did not actually make this claim in the book. However, subsequent research has revealed that there were cases of AIDS much earlier than initially known. HIV-infected blood samples have been found from as early as 1959 in Africa (see HIV main entry), and HIV has been shown to have caused the 1969 death of Robert Rayford, a 16-year-old St. Louis male, who could have contracted it as early as 7 years old due to sexual abuse, suggesting that HIV had been present, at very low prevalence, in the U.S. since before the 1970s.
An early theory asserted that a series of inoculations against hepatitis B that were performed in the gay community of San Francisco were tainted with HIV. Although there was a high correlation between recipients of that vaccination and initial cases of AIDS, this theory has long been discredited. However, the theory has never been officially proven or disproven. HIV, hepatitis B, and hepatitis C are bloodborne diseases with very similar modes of transmission, and those at risk for one are at risk for the others. 
Activists and critics of current AIDS policies allege that another preventable impediment to stemming the spread of the disease and/or finding a treatment was the vanity of "celebrity" scientists. Robert Gallo, an American scientist involved in the search for a new virus in the people affected by the disease, became embroiled in a legal battle with French scientist Luc Montagnier, who had first discovered such a virus in tissue cultures derived from a patient suffering from enlargement of the lymphnodes (an early sign of AIDS). Montagnier had named the new virus LAV (Lymphoadenopathy-Associated Virus).
Gallo, who appeared to question the primacy of the French scientist's discovery, refused to recognize the "French virus" as the cause of AIDS, and tried instead to claim the disease was caused by a new member of a retrovirus family, HTLV, which he had discovered. Critics claim that because some scientists were more interested in trying to win a Nobel prize than in helping patients, research progress was delayed and more people needlessly died. After a number of meetings and high-level political intervention, the French scientists and Gallo agreed to "share" the discovery of HIV, although eventually Montagnier and his group were recognized as the true discoverers, and won the 2008 Nobel Prize for it.
Publicity campaigns were started in attempts to counter the incorrect and often vitriolic perception of AIDS as a "gay plague". These included the Ryan White case, red ribbon campaigns, celebrity dinners, the 1993 film version of And the Band Played On, sex education programs in schools, and television advertisements. Announcements by various celebrities that they had contracted HIV (including actor Rock Hudson, basketball star Magic Johnson, tennis player Arthur Ashe and singer Freddie Mercury) were significant in arousing media attention and making the general public aware of the dangers of the disease to people of all sexual orientations. 
AIDS was met with great fear and concern by the nation, much like any other epidemic, and those who were primarily affected were homosexuals, African-Americans, Latinos, and intravenous drug users. The general thought of the population was to create distance and establish boundaries from these people, and some doctors were not immune from such impulses. During the epidemic, doctors began to not treat AIDS patients, not only to create distance from these groups of people, but also because they were afraid to contract the disease themselves. A surgeon in Milwaukee stated, "I've got to be selfish. It's an incurable disease that's uniformly fatal, and I'm constantly at risk for getting it. I've got to think about myself. I've got to think about my family. That responsibility is greater than to the patient." 
Some doctors thought it was their duty to stay away from the virus because they had other patients to think of. In a survey of doctors in the mid to late 1980s, a substantial number of physicians indicated that they didn't have an ethical obligation to treat and care for those patients with HIV/AIDS.  A study of primary care providers showed that half would not care for patients if they were given a choice.  In 1990, a national survey of doctors showed that "only 24% believed that office-based practitioners should be legally required to provide care to individuals with HIV infection."  However, there were many doctors who chose to care for these patients with AIDS for different reasons: they shared the same sexual orientation as the infected, a commitment to providing care to the diseased, an interest in the mysteries of infectious disease, or a desire to tame the awful threat.  Treating patients infected with the AIDS virus changed some doctors' personal lives, as it caused them to have to deal with some of the same stigmas that their patients had. This disease also weighed on their minds, because they often had to deal with witnessing the death of patients and most often those patients were as young or even younger than they were.
African Americans continue to experience the most severe burden of HIV, compared with other races and ethnicities. Black people represent approximately 13% of the U.S. population, but accounted for an estimated 43% of new HIV infections in 2017.  Furthermore, they make up nearly 52% of AIDS-related deaths in America. While the overall rates of HIV incidences and prevalence have decreased, they have increased in one particular demographic: African American gay and bisexual men (a 4% increase). In America, Black households were reported to have the lowest median income, leading to lower rates of individuals with health insurance. This creates cost barriers to antiretroviral treatments. The racial disparities between women afflicted with HIV/AIDS have been made clear in a 2010 study as well, which showed that 64% of women infected with HIV that year were Black women.  The trend is longstanding: CDC data from 2006 revealed that about half of the 1 million Americans living with HIV were Black.  This unequal distribution has led researchers to studying the long-term effects of racial and gender discrimination along with HIV-related stigma, and how this plays a role in people's lives.
Hispanics/Latinos are also disproportionately affected by HIV. Hispanics/Latinos represented 16% of the population but accounted for 21% of new HIV infections in 2010. This disparity is even more apparent among Latina women, which represent 13% of the population but account for 20% of reported HIV cases among women in the United States.  Hispanics/Latinos accounted for 20% of people living with HIV infection in 2011. Disparities persist in the estimated rate of new HIV infections in Hispanics/Latinos. In 2010, the rate of new HIV infections for Latino males was 2.9 times that for white males, and the rate of new infections for Latinas was 4.2 times that for white females. Since the epidemic began, more than 100,888 Hispanics/Latinos with an AIDS diagnosis have died, including 2,863 in 2016. 
American Indian/Alaskan Native communities in the United States see a higher rate of HIV/AIDS in comparison to whites, Asians, and Native Hawaiians/other Native Pacific Islanders. Although AI/AN with HIV/AIDS only represent roughly 1% of positive cases in the U.S.,  the number of diagnoses among AI/AN gay and bisexual men rose by 54% between 2011 and 2015. Additionally, the survival rate of diagnosed AI/AN was the lowest of all races in the United States between 1998 and 2005.  In recent years, the Centres for Disease Control and Prevention (CDC) have put in place a "high impact prevention approach"  in partnership with the Indian Health Service and the CDC Tribal Advisory Committee to tackle the growing rates in a culturally appropriate way. The higher rate of HIV/AIDS cases among AI/AN people have been attributed to a number of factors including socioeconomic disadvantages faced by AI/AN communities, which may result in difficulty accessing healthcare and high-quality housing. It may be more difficult for gay and bisexual AI/AN men to access healthcare due to living in rural communities, or due to stigma attached to their sexualities. AI/AN people have been reported to have higher rates of other STIs, including chlamydia and gonorrhea, which also increases likeliness of contracting or transmitting HIV.  Furthermore, as there are over 560 federally recognized AI/AN tribes, there is some difficulty in creating outreach programs which effectively appeal to all tribes whilst remaining culturally appropriate. As well as fear of stigma from within AI/AN communities, there may also be a fear among LGBTQ+ AI/AN of a lack of understanding from health professionals in the United States, particularly among Two Spirit people. A 2013 NASTAD report calls for the inclusion of LGBT and Two Spirit AI/AN in HIV/AID program planning and asserts that "health departments should utilize local experts to better understand regional definitions of "Two Spirit" and incorporate modules on Native gay men and Two Spirit people into cultural sensitivity courses for public health service providers". 
Down-low is an African American slang term  that typically refers to a subculture of Black men who usually identify as heterosexual, but who have sex with men; some avoid sharing this information even if they have female sexual partner(s) married or single.    
According to a study published in the Journal of Bisexuality, "[t]he Down Low is a lifestyle predominately practiced by young, urban Black men who have sex with other men and women, yet do not identify as gay or bisexual". 
In this context, "being on the Down Low" is more than just men having sex with men in secret, or a variant of closeted homosexuality or bisexuality—it is a sexual identity that is, at least partly, defined by its "cult of masculinity" and its rejection of what is perceived as white culture (including white LGBT culture) and terms.     A 2003 New York Times Magazine cover story on the Down Low phenomenon explains that the Black community sees "homosexuality as a White man's perversion." 
The CDC cited three findings that relate to African-American men who operate on the down-low (engage in MSM activity but don't disclose to others):
- African American men who have sex with men (MSM), but who do not disclose their sexual orientation (nondisclosers), have a high prevalence of HIV infection (14%); nearly three times higher than nondisclosing MSMs of other races/ethnicities (5%).
- Confirming previous research, the study of 5,589 MSM, aged 15–29 years, in six U.S. cities found that African American MSM were more likely not to disclose their sexual orientation compared with white MSM (18% vs. 8%).
- HIV-infected nondisclosers were less likely to know their HIV status (98% were unaware of their infection compared with 75% of HIV-positive disclosers), and more likely to have had recent female sex partners. 
This section possibly contains original research. (May 2018)
Access to healthcare is very important in preventing and treating HIV/AIDS. It can be affected by health insurance which is available to people through private insurers, Medicare and Medicaid which leaves some people still vulnerable. Historically, African-Americans have faced discrimination when it comes to receiving healthcare. 
Homosexuality is viewed negatively in the African-American Community. "In a qualitative study of 745 racially and ethnic diverse undergraduates attending a large Midwestern university, Calzo and Ward (2009) determined that parents of African-American participants discussed homosexuality more frequently than the parents of other respondents. In analyses of the values communicated, Calzo and Ward (2009) reported that Black parents offered greater indication that homosexuality is perverse and unnatural". 
Homosexuality is seen as a threat to the African-American empowerment.  Masculinity is seen as important for the African-American community because it shows that the community is in control of their own destiny. Since the stigma circling homosexuality is that it is "effeminate", then homosexuality is seen as a threat to masculinity. "Black manhood, then, depends on men's ability to be provider, progenitor, and protector. But, as the Black male performance of parts of this script is thwarted by economic and cultural factors, the performance of Black masculinity becomes predicated on a particular performance of Black sexuality and avoidance of weakness and femininity. If sexuality remains one of the few ways that Black men can recapture a masculinity withheld from them in the marketplace, endorsing Black homosexuality subverts the cultural project of reinscribing masculinity within the Black community." This critical view is influenced by Internalized homophobia. "Internalized homophobia is defined as the lesbian, gay, or bisexual individual's inward direction of society's homophobic attitudes (Meyer 1995)." 
A homophobic culture is sustained in the African-American community through the church because religion is a vital part of the African-American community: "As reported by Peterson and Jones (2009), AA MSM tended to be more involved with religious communities than NHW MSM." Because the church reiterates this stigma of homosexuality, the African-American community has higher rates of internalized homophobia. This internalized homophobia causes a lower chance of HIV/AIDS education on prevention and care within the African-American community. 
Sex education varies throughout the United States and in some areas could use more informative measures. African-Americans and Hispanic/Latinos experience higher rates of lower socioeconomic statuses and fewer opportunities than white people. This causes limited access to (higher) education in lower socioeconomic areas. Sex education on HIV prevention has decreased from 64% (2000) to 41% (2014). Out of the 50 states, 26 put a larger emphasis on abstinence sex education. Abstinence-only sex education is correlated to increasing rates of HIV especially in teenagers and young adults. 
With mass incarceration of the African-American community, HIV has been spreading rapidly throughout jails and prisons. "Among jail populations, African American men are 5 times as likely as white men, and twice as likely as Hispanic/Latino men, to be diagnosed with HIV." Since most people contract HIV before being incarcerated, it is hard to know who has the disease and to keep it from spreading. Typical prison culture often makes transmission of HIV nearly an endemic problem to deal with. Many prisoners will either force themselves upon or be forced into sexual encounters, which coupled with a lack of condoms, often results in many prisoners contracting and spreading the disease further. Many inmates do not disclose their high-risk behaviors, such as injection drug use, because they fear being stigmatized and ostracized by other inmates. There is also a lack of educational programs on disease prevention for inmates. Because "nine out of ten jail inmates are released in under 72 hours which makes it hard to test them for HIV and help them find treatment," the problem persists outside of prison. 
Starting in the early 1980s, AIDS activist groups and organizations began to emerge and advocate for people infected with HIV in the United States. Though it was an important aspect of the movement, activism went beyond the pursuit of funding for AIDS research. Groups acted to educate and raise awareness of the disease and its effects on different populations, even those thought to be at low-risk of contracting HIV. This was done through publications and "alternative media" created by those living with or close to the disease. 
In contrast to this "alternative media" created by activist groups, mass media reports on AIDS were not as prevalent, most likely due to the stigma surrounding the topic. The general public was therefore not exposed to information regarding the disease. In addition, the federal government and laws in place essentially prevented individuals afflicted with AIDS from getting sufficient information about the disease. Risk reduction education was not easily accessible, so activist groups took action in releasing information to the public through these publications. 
Activist groups worked to prevent spread of HIV by distributing information about safe sex. They also existed to support people living with HIV/AIDS, offering therapy, support groups, and hospice care.  Organizations like Gay Men's Health Crisis, Proyecto ContraSIDA por Vida, the Lesbian AIDS Project, and SisterLove were created to address the needs of certain populations living with HIV/AIDS. Other groups, like the NAMES Project, emerged as a way of memorializing those who had passed, refusing to let them be forgotten by the historical narrative. One group, the Association for Drug Abuse Prevention and Treatment (ADAPT), headed by Yolanda Serrano, coordinated with their local prison, Riker's Island Correctional Facility, to advocate for those imprisoned and AIDS positive to be released early, so that they could pass away in the comfort of their own homes. 
Both men and women, heterosexual and queer populations were active in establishing and maintaining these parts of the movement. Because AIDS was initially thought only to impact gay men, most narratives of activism focus on their contributions to the movement. However, women also played a significant role in raising awareness, rallying for change, and caring for those impacted by the disease. Lesbians helped organize and spread information about transmission between women, as well as supporting gay men in their work. Narratives of activism also tend to focus on organizing done in coastal cities, but AIDS activism was present and widespread across both urban and more rural areas of the United States. Organizers sought to address needs specific to their communities, whether that was working to establish needle exchange programs, fighting against housing or employment discrimination, or issues faced primarily by people identified as members of specific groups (such as sex workers, mothers and children, or incarcerated people).
Initially when the AIDS epidemic surfaced in the United States, a large proportion of patients were LGBT community members, leading to stigmatization of the disease. Because of this, the AIDS activist groups took initiative in testing and experimenting with new possible medications for treating HIV, after researchers outside of the community refused. This research originally done by early activist groups contributed to treatments still being used today. 
Among the landmark legal cases in gay rights on the topic of AIDS is Braschi vs. Stahl. Litigant Miguel Braschi sued his landlord for the right to continue living in their rent controlled apartment after his gay partner Leslie Blanchard died of AIDS.  The NY Court of Appeals became the first American appellate court to conclude that same-sex relationships are entitled to legal recognition.  The case was litigated at the height of the AIDS crisis and sadly, the plaintiff himself died only a year after his groundbreaking court victory. The case focused on emotional and economic interdependency rather than on the existence of legal formalities; the verdict more difficult for government officials to reject the notion that same-sex couples could constitute families and that they were entitled to at least some of the protections afforded by law. 
The United States Conference of Catholic Bishops was the first church body to address the pandemic in 1987 with a document entitled " On "The Many Faces of AIDS: A Gospel Response."  In the document they said the church must provide pastoral care to those infected with HIV as well as medical care.   It called discrimination against people with AIDS "unjust and immoral.",  but rejected extra-marital sex and the use of condoms to halt the spread of the disease.  They reiterated the Church's teaching that human sexuality was a gift and was to be used in monogamous marriages. 
The Catholic Church, with over 117,000 health centers, is the largest private provider of HIV/AIDS care.  Individual dioceses around the United States began hiring staff in the 1980s to coordinate AIDS ministry.  By 2008, Catholic Charities USA had 1,600 agencies providing services to AIDS sufferers, including housing and mental health services.  The Archdiocese of New York opened a shelter for AIDS patients in 1985.  In the same year, they opened a hotline for people to call for resources and information.  The Missionaries of Charity, led by Mother Teresa, opened hospices in the Greenwich Village neighborhood of New York, Washington D.C., and San Francisco in the 1980s.   Individual parishes began opening hospices for AIDS patients, with the first being in New Orleans in 1985.  
The bishops of the United States issued a pastoral letter in the 1980s titled, "A Call to Compassion," saying those with AIDS "deserve to remain within our communal consciousness and to be embraced with unconditional love."  In Always Our Children, their 1997 pastoral letter on homosexuality, the American bishops noted "an importance and urgency" to minister to those with AIDS, especially considering the impact it had on the gay community.  They encouraged church ministers to include prayers at Mass for those with AIDS and those who care for them, those who have died from AIDS, and all of their friends, families, and companions.  They recommended special masses be said for healing with anointing of the sick or other events to take place around the time of World AIDS Day.  They asked every Catholic to stand in solidarity with those who were affected by the disease. 
In 1987, the bishops of California issued a document saying that just as Jesus loved and healed lepers, the blind, the lame, and others, so too should Catholics care for those with AIDS.  The year before, they publicly denounced Proposition 64, a measure pushed by Lyndon H. LaRouche to forcibly quarantine those with AIDS, and encouraged Catholics to vote against it.  Joseph L. Bernardin, the Archbishop of Chicago, issued a 12-page policy paper in 1986 that outlined "sweeping pastoral initiatives" his archdiocese would be undertaking. 
An effective response to HIV/AIDS requires that groups of vulnerable populations have access to HIV prevention programs with information and services that are specific to them.  In the present day, some activist groups and AIDS organizations that were established during the height of the epidemic are still present and working to assist people living with AIDS.  They may offer any combination of the following: health education, counseling and support, or advocacy for law and policy. AIDS organizations also continue to call for public awareness and support through participation in events like pride parades, World AIDS Day, or AIDS walks. Newer activism has appeared in advocacy for Pre-Exposure Prophylaxis (PrEP), which has shown to significantly limit transmission of HIV.
The CDC estimates at the end of 2017, there were 1,018,346 adults and adolescents with diagnosed HIV in the US and dependent areas.  Since 2010, the number of people living with HIV has increased, while the annual number of new HIV infections has declined to 37,832 diagnosed in 2018.  Within the overall estimates, however, some groups are affected more than others. 70% of 2018 diagnoses were among men who have sex with men, 7% were among injection drug users, and new infections disproportionately occurred among heterosexual women and African Americans. 
The most recent CDC HIV Surveillance Report estimates that 38,281 new cases of HIV were diagnosed in the United States in 2017, a rate of 11.8 per 100,000 population.  This rate is a decrease from the previous year's estimates, which indicated 39,589 new infections and a rate of 12.2 per 100,000 population.  Individuals in the age range 25–29 years-old had the highest rates of new infection, with a rate of 32.9 per 100,000.  With regard to race and ethnicity, the highest rates of new infections in 2017 occurred in the black/African-American population, with a new infection rate of 41.1 per 100,000. This more than doubled the next highest rate for a racial or ethnic group, which was Hispanic/Latino with a rate of 16.6 per 100,000.  The lowest rates of new infection in 2017 occurred in the white population and Asian population, which each had a new infection rate of 5.1 per 100,000. 
According to CDC estimates, the most common transmission category of new infections remained male-to-male sexual contact, which accounted for roughly 66.6% of all new infections in the United States in 2017.  With regard to region of residence, the highest rates of new infections in 2017 occurred in the United States South, with 19,968 total new infections and 16.1 infections per 100,000.  The region identified as 'South' includes Alabama, Arkansas, Delaware, District of Columbia, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, Oklahoma, South Carolina, Tennessee, Texas, Virginia, and West Virginia. 
In the United States, men who have sex with men (MSM), described as gay and bisexual,  make up about 55% of the total HIV-positive population, and 83% of the estimated new HIV diagnoses among all males aged 13 and older, and approximately 92% of new HIV diagnoses among all men in their age group. 1 in 6 gay and bisexual men are therefore expected to be diagnosed with HIV in their lifetime if current rates continue. Among the proportion of new HIV positive gay and bisexual men in 2017, 39% are African American, 32% are white, and 24% are Hispanic/Latino.  The CDC estimates that more than 600,000 gay and bisexual men are currently living with HIV in the United States.  A review of four studies in which trans women in the United States were tested for HIV found that 27.7% tested positive. 
In a 2008 study, the Center for Disease Control found that, of the study participants who were men who had sex with men ("MSM"), almost one in five (19%) had HIV and "among those who were infected, nearly half (44 percent) were unaware of their HIV status." The research found that white MSM "represent a greater number of new HIV infections than any other population, followed closely by black MSM—who are one of the most disproportionately affected subgroups in the U.S." and that most new infections among white MSM occurred among those aged 30–39 followed closely by those aged 40–49, while most new infections among black MSM have occurred among young black MSM (aged 13–29).  
In 2015, a major HIV outbreak, Indiana's largest-ever, occurred in two largely rural, economically depressed and poor counties in the southern portion of the state, due to the injection of a relatively new opioid-type drug called Opana ( oxymorphone), which is designed be taken in pill form but is ground up and injected intravenously using needles. Because of the lack of HIV cases in that area beforehand and the youth of many but not all of those affected, the relative unavailability in the local area of treatment centers capable of dealing with long-term health needs, HIV care, and drug addiction during the initial phases of the outbreak, and political opposition to needle exchange programs, the outbreak expanded for months, resulting up to 127 preventable cases. Under pressure, officials eventually declared a state of emergency, but much of the damage had already been done. 
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