Demographic features of the population of Tanzania include population density, ethnicity, education level, health of the populace, economic status, religious affiliations, and other aspects of the population.
HIV/AIDS originated in the early 20th century and has become a major public health concern and cause of death in many countries. AIDS rates varies significantly between countries, with the majority of cases 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 population infected worldwide – approximately 35 million people – were Africans, of whom around 1 million have already died. Eastern and Southern Africa alone accounted for an estimate of 60 percent of all people living with HIV and 100 percent of all AIDS deaths in 2011. The countries of Eastern and Southern Africa are most affected, leading to raised death rates and lowered life expectancy among adults between the ages of 20 and 49 by about twenty years. Furthermore, 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.
The global epidemic of HIV/AIDS began in 1981, and is an ongoing worldwide public health issue. According to the World Health Organization (WHO), by 2023, HIV/AIDS had killed approximately 40.4 million people, and approximately 39 million people were infected with HIV globally. Of these, 29.8 million people (75%) are receiving antiretroviral treatment. There were about 630,000 deaths from HIV/AIDS in 2022. The 2015 Global Burden of Disease Study estimated that the global incidence of HIV infection peaked in 1997 at 3.3 million per year. Global incidence fell rapidly from 1997 to 2005, to about 2.6 million per year. Incidence of HIV has continued to fall, decreasing by 23% from 2010 to 2020, with progress dominated by decreases in Eastern Africa and Southern Africa. As of 2020, there are approximately 1.5 million new infections of HIV per year globally.
The Caribbean is the second-most affected region in the world in terms of HIV prevalence rates. Based on 2009 data, about 1.0 percent of the adult population is living with the disease, which is higher than any other region except Sub-Saharan Africa. Several factors influence this epidemic, including poverty, gender, sex tourism, and stigma. HIV incidence in the Caribbean declined 49% between 2001 and 2012. Different countries have employed a variety of responses to the disease, with a range of challenges and successes.
In Western Europe, the routes of transmission of HIV are diverse, including paid sex, sex between men, intravenous drugs, mother to child transmission, and heterosexual sex. However, many new infections in this region occur through contact with HIV-infected individuals from other regions. In some areas of Europe, such as the Baltic countries, the most common route of HIV transmission is through injecting drug use and heterosexual sex, including paid sex.
Ethiopia has a large and very vulnerable population, with an estimated 15 percent of the population living below the poverty line. HIV/AIDS is one of the key challenges for the overall development of Ethiopia, as it has led to a seven-year decrease in life expectancy and a greatly reduced workforce.
Like other countries worldwide, HIV/AIDS is present in Ghana. As of 2014, an estimated 150,000 people infected with the virus. HIV prevalence is at 1.37 percent in 2014 and is highest in the Eastern Region of Ghana and lowest in the northern regions of the country. In response to the epidemic, the government has established the Ghana AIDS Commission which coordinates efforts amongst NGO's, international organizations and other parties to support the education about and treatment of aids throughout Ghana and alleviating HIV/AIDS issues in Ghana.
Kenya has a severe, generalized HIV epidemic, but in recent years, the country has experienced a notable decline in HIV prevalence, attributed in part to significant behavioral change and increased access to ARV. Adult HIV prevalence is estimated to have fallen from 10 percent in the late 1990s to about 4.8 percent in 2017. Women face considerably higher risk of HIV infection than men but have longer life expectancies than men when on ART. The 7th edition of AIDS in Kenya reports an HIV prevalence rate of eight percent in adult women and four percent in adult men. Populations in Kenya that are especially at risk include injecting drug users and people in prostitution, whose prevalence rates are estimated at 53 percent and 27 percent, respectively. Men who have sex with men (MSM) are also at risk at a prevalence of 18.2%. Other groups also include discordant couples however successful ARV-treatment will prevent transmission. Other groups at risk are prison communities, uniformed forces, and truck drivers.
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
HIV/AIDS in Nigeria was a concern in the 2000s, when an estimated seven million people had HIV/AIDS. In 2008, the HIV prevalence rate among adults aged between 15 and 49 was 3.9 percent, in 2018 the rate among adults aged between 15 and 65 was 1.5 percent. As elsewhere in Africa, women are statistically more likely to have HIV/AIDS. The Nigeria HIV/AIDS Indicator and Impact Survey was the world's largest and presented statistics which showed the overall numbers were lower than expected. Antiretroviral treatment is available, but people prefer to take the therapy secretly, since there is still noticeable discrimination against people with HIV/AIDS.
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.
The Philippines has one of the lowest rates of infection of HIV/AIDS, yet has one of the fastest growing number of cases worldwide. The Philippines is one of seven countries with growth in number of cases of over 25%, from 2001 to 2009.
HIV/AIDS in Bolivia has a less than 1 percent prevalence of Bolivia's adult population estimated to be HIV-positive. Bolivia has one of the lowest HIV prevalence rates in the Latin America and Caribbean region.
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 Jamaica has a 1.5 percent prevalence of the adult population estimated to be HIV-positive. There has been no significant change over the last five years and therefore Jamaica appears to have stabilized its HIV/AIDS epidemic.
In 2016, the prevalence rate of HIV/AIDS in adults aged 15–49 was 0.3%, relatively low for a developing country. This low prevalence has been maintained, as in 2006, the HIV prevalence in Mexico was estimated at around 0.3% as well. The infected population is remains mainly concentrated among high risk populations, men who have sex with other men, intravenous drug users, and commercial sex workers. This low national prevalence is not reflected in the high-risk populations. The prison population in Mexico, faces a fairly similar low rate of around 0.7%. Among the population of prisoners, around 2% are known to be infected with HIV. Sex workers, male and female, face an HIV prevalence of around 7%. Identifying gay men and men who have sex with other men have a prevalence of 17.4%. The highest risk-factor group is identifying transgender people; about 17.4% of this population is known to be infected with HIV. Around 90% of new infections occur by sex-related methods of transmission. Of these known infected populations, around 60% of living infected people are known to be on anti-retroviral therapy (ART).
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% to 1.6%. As of 2019, 0.6% of Cambodian adults currently has the virus.
The 2010 maternal mortality rate per 100,000 births for Tanzania was 790. This is compared with 449 in 2008 and 610.2 in 1990. The UN Child Mortality Report 2011 reports a decrease in under-five mortality from 155 per 1,000 live births in 1990 to 76 per 1,000 live births in 2010, and in neonatal mortality from 40 per 1,000 live births to 26 per 1,000 live births. The aim of the report The State of the World's Midwifery is to highlight ways in which the Millennium Development Goals can be achieved, particularly Goal 4 – Reduce child
With an estimated 120,000 people living with HIV/AIDS, the HIV/AIDS epidemic in Colombia is consistent with the epidemic in much of Latin America as a whole, both in terms of prevalence of infection and characteristics of transmission and affected populations. Colombia has a relatively low rate of HIV infection at 0.4%. Certain groups, particularly men who have sex with men, bear the burden of significantly higher rates of infection than the general population. Colombia's health care system and conception of a "right to health", created by the T-760 decision of 2008, have revolutionized access to HIV treatment. Despite this, the quality of health insurance and treatment for HIV has often been disputed.
