What is the incidence and prevalence of HIV globally?

Global prevalence among adults (the percent of people ages 15-49 who are infected) has leveled since 2001 and was 0.7% in 2019 (see Figure 1). There were 38 million people living with HIV in 2019 (see Table 1), up from 30.7 million in 2010, the result of continuing new infections and people living longer with HIV.

What is incidence of HIV?

According to UNAIDS : Number of People with HIV—There were approximately 37.7 million people across the globe with HIV in 2020. Of these, 36 million were adults and 1.7 million were children aged 0-14 years. More than half (53%) were women and girls.

Where is the greatest incidence and prevalence of HIV in the world?

Among all countries worldwide those in sub-Saharan Africa have the highest rates of HIV. The countries with the highest rates of HIV include Eswatini, Lesotho, and Botswana. In 2020, Eswatini had the highest prevalence of HIV with a rate of almost 27 percent.

Why is the prevalence of HIV increasing?

Over the same observation period adult HIV prevalence increased steadily from 21% to 29%. The overall increase in HIV prevalence was largely driven by the prevalence trends in women and men older than 24 years of age, i.e., the age group in which the largest proportions of HIV-infected people received ART.

What is the difference between HIV prevalence and incidence?

HIV prevalence: The number of persons with HIV at a given time regardless of the time of infection, whether the person has received a diagnosis (aware of infection), or the stage of HIV disease. HIV incidence: The estimated number of persons newly infected with HIV during a specified time period (for example, a year).

How is the prevalence of HIV infection calculated?

3. HIV prevalence, which represents counts of persons with diagnosed or undiagnosed HIV infection who were alive at the end of a given year, was estimated by subtracting reported cumulative deaths from cumulative infections. 4.

How has HIV incidence changed among transmission risk groups in 2015?

Results: Modeled HIV incidence decreased 14.8% overall, from 45 200 infections in 2008 to 38 500 in 2015, and among all transmission risk groups except MSM.

How has the incidence of HIV infection changed among males?

By HIV transmission category, the annual number of HIV infections in 2019, compared with 2015, decreased among males with transmission attributed to male-to-male sexual contact, but remained stable among all other transmission categories.