HIV/AIDS originated in Africa in the early 20th century and is a major public health concern and cause of death in many African countries. AIDS rates vary significantly between countries, though the majority of cases are concentrated in Southern Africa. Although the continent is home to about 15.2 percent of the world's population, more than two-thirds of the total infected worldwide – some 35 million people – were Africans, of whom 15 million have already died. Sub-Saharan Africa alone accounted for an estimated 69 percent of all people living with HIV and 70 percent of all AIDS deaths in 2011. In the countries of sub-Saharan Africa most affected, AIDS has raised death rates and lowered life expectancy among adults between the ages of 20 and 49 by about twenty years. Furthermore, the life expectancy in many parts of Africa is declining, largely as a result of the HIV/AIDS epidemic with life-expectancy in some countries reaching as low as thirty-nine years.
HIV/AIDS is one of the most serious health concerns in South Africa. The country has the highest number of people afflicted with HIV of any country, and the fourth-highest adult HIV prevalence rate, according to the 2019 United Nations statistics.
Since the first HIV/AIDS case in the Lao People's Democratic Republic (PDR) was identified in 1990, the number of infections has continued to grow. In 2005, UNAIDS estimated that 3,700 people in Lao PDR were living with HIV.
The Democratic Republic of the Congo was one of the first African countries to recognize HIV, registering cases of HIV among hospital patients as early as 1983.
HIV/AIDS in Lesotho constitutes a very serious threat to Basotho and to Lesotho's economic development. Since its initial detection in 1986, HIV/AIDS has spread at alarming rates in Lesotho. In 2000, King Letsie III declared HIV/AIDS a natural disaster. According to the Joint United Nations Programme on HIV/AIDS (UNAIDS) in 2016, Lesotho's adult prevalence rate of 25% is the second highest in the world, following Eswatini.
Mozambique is a country particularly hard-hit by the HIV/AIDS epidemic. According to 2008 UNAIDS estimates, this southeast African nation has the 8th highest HIV rate in the world. With 1,600,000 Mozambicans living with HIV, 990,000 of which are women and children, Mozambique's government realizes that much work must be done to eradicate this infectious disease. To reduce HIV/AIDS within the country, Mozambique has partnered with numerous global organizations to provide its citizens with augmented access to antiretroviral therapy and prevention techniques, such as condom use. A surge toward the treatment and prevention of HIV/AIDS in women and children has additionally aided in Mozambique's aim to fulfill its Millennium Development Goals (MDGs). Nevertheless, HIV/AIDS has made a drastic impact on Mozambique; individual risk behaviors are still greatly influenced by social norms, and much still needs to be done to address the epidemic and provide care and treatment to those in need.
HIV/AIDS in Namibia is a critical public health issue. HIV has been the leading cause of death in Namibia since 1996, but its prevalence has dropped by over 70 percent in the years from 2006 to 2015. While the disease has declined in prevalence, Namibia still has some of the highest rates of HIV of any country in the world. In 2016, 13.8 percent of the adult population between the ages of 15 and 49 are infected with HIV. Namibia had been able to recover slightly from the peak of the AIDS epidemic in 2002. At the heart of the epidemic, AIDS caused the country's live expectancy to decline from 61 years in 1991 to 49 years in 2001. Since then, the life expectancy has rebounded with men living an average of 60 years and women living an average of 69 years
Rwanda faces a generalized epidemic, with an HIV prevalence rate of 3.1 percent among adults ages 15 to 49. The prevalence rate has remained relatively stable, with an overall decline since the late 1990s, partly due to improved HIV surveillance methodology. In general, HIV prevalence is higher in urban areas than in rural areas, and women are at higher risk of HIV infection than men. Young women ages 15 to 24 are twice as likely to be infected with HIV as young men in the same age group. Populations at higher risk of HIV infection include people in prostitution and men attending clinics for sexually transmitted infections.
UNAIDS has said that HIV/AIDS in Indonesia is one of Asia's fastest growing epidemics. In 2010, it is expected that 5 million Indonesians will have HIV/AIDS. In 2007, Indonesia was ranked 99th in the world by prevalence rate, but because of low understanding of the symptoms of the disease and high social stigma attached to it, only 5-10% of HIV/AIDS sufferers actually get diagnosed and treated. According to the a census conducted in 2019, it is counted that 640,443 people in the country are living with HIV. The adult prevalence for HIV/ AIDS in the country is 0.4%. Indonesia is the country is Southeast Asia to have the most number of recorded people living with HIV while Thailand has the highest adult prevalence.
Cases of HIV/AIDS in Peru are considered to have reached the level of a concentrated epidemic. According to a population-based survey conducted in Peru’s 24 largest cities in 2002, adult HIV prevalence was estimated to be less than 1 percent. The survey demonstrated that cases are unevenly distributed in the country, affecting mostly young people between the ages of 25 and 34. As of July 2010, the cumulative reported number of persons infected with HIV was 41,638, and there were 26,566 cases of AIDS, according to the Ministry of Health (MOH), and the male/female ratio for AIDS diagnoses in 2009 was 3.02 to 1. The Joint United Nations Program on HIV/AIDS (UNAIDS) estimates 76,000 Peruvians are HIV-positive, meaning that many people at risk do not know their status. There were 3,300 deaths due to AIDS in Peru in 2007, down from 5,600 deaths in 2005.
The Dominican Republic has a 0.7 percent prevalence rate of HIV/AIDS, among the lowest percentage-wise in the Caribbean region. However, it has the second most cases in the Caribbean region in total, with an estimated 46,000 HIV/AIDS-positive Dominicans as of 2013.
HIV/AIDS in El Salvador has a less than 1 percent prevalence of the adult population reported to be HIV-positive, El Salvador and therefore there is a low-HIV-prevalence country, but the virus remains a significant threat in high-risk communities, such as commercial sex workers (CSWs) and men who have sex with men (MSM).
According to the Global Fund, Honduras is the Central American country most adversely affected by the HIV/AIDS epidemic. As of 1998, Honduras had the highest prevalence of HIV out of all seven Central American countries according to a study published by the office of the Honduran Secretary of Public Health. As of that same year, Hondurans made up only 17% of the Central American population, yet Honduras contained 50% of the initial AIDS cases in Central America and 60% of all Central American cases in 2001. In more recent years, new HIV infections have decreased by 29% since 2010 while AIDS-related deaths have increased by 11% since then. HIV/AIDS heavily affects the young, active, working population in Honduras, and HIV/AIDS deaths account for 10% of the overall national mortality rate. As of 2008, AIDS was the leading cause of death among Honduran women of childbearing age and the second-leading cause of hospitalization among both men and women. Sexually transmitted infections are common, and condom use in risky sexual encounters is sporadic and variable. HIV remains a mainly heterosexual epidemic in Honduras, as 90% of emerging infections are attributed to heterosexual transmission. It is estimated that the prevalence of HIV among Honduran adults is 1.5%.
HIV/AIDS in Jamaica has a 1.5 percent prevalence of the adult population estimated to be HIV-positive and no significant change over the last five years and therefore Jamaica appears to have stabilized its HIV/AIDS epidemic.
With only 0.2 percent of the adult population estimated to be HIV-positive, Nicaragua has one of the lowest HIV prevalence rates in Central America. HIV was first detected in Nicaragua in 1987, after concentrated epidemics had been reported in other Central American nations. The onset of the epidemic was likely delayed by Nicaragua’s 10-year civil war and the U.S.-led economic blockade, both of which left the country isolated for several years. Relative control over commercial sex work, low infection rates among injecting drug users, and a ban on the commercial sale of blood also slowed HIV transmission. However, the country is at risk of a broader epidemic because of social conditions such as multiple sex partners, gender inequality, and widespread poverty. Many people are unaware of their HIV status and could unwittingly spread the disease. UNAIDS estimates Nicaragua has 7,300 HIV-positive people, nearly half of whom were identified over the past three years.
With 1.28 percent of the adult population estimated by UNAIDS to be HIV-positive in 2006, Papua New Guinea has one of the most serious HIV/AIDS epidemics in the Asia-Pacific subregion. Although this new prevalence rate is significantly lower than the 2005 UNAIDS estimate of 1.8 percent, it is considered to reflect improvements in surveillance rather than a shrinking epidemic. Papua New Guinea accounts for 70 percent of the subregion's HIV cases and is the fourth country to be classified as having a generalized HIV epidemic.
Despite big declines, the prevalence of HIV/AIDS in Cambodia is among the highest in Asia. Although Cambodia is one of the poorest countries in the world, extensive HIV prevention and control efforts by the Royal Government of Cambodia and its partners have helped to reduce the spread of HIV. Between 2003 and 2005, the estimated HIV prevalence among Cambodian adults aged 15 to 49 declined by 20%, from 2.0 percent to 1.6 percent. As of 2019, 0.6% of Cambodian adults currently has the virus.
