The distribution of HIV infections between urban and rural areas varies from country to country. In many countries, large proportions of people living with HIV reside in urban areas. In other countries, the distribution of people living with HIV is primarily restricted to just a few cities.
UNAIDS has identified 200 cities likely to have the largest number of people living with HIV and estimated that together, these cities — which are located in 63 countries accounted for more than one quarter of the estimated 35 million [33.2 million–37.2 million] people living with HIV globally in 2013. Almost half (94) of the 200 cities are
in countries with large HIV epidemics and in which HIV is transmitted mainly through unprotected heterosexual sex. In the remaining 106 cities, unprotected sex between men, paid sex and the sharing of contaminated drug-injecting equipment are the main drivers of the epidemic.
The UNAIDS Fast-Track approach particularly focuses on 30 countries that account for nearly 90% of all the people newly infected with HIV worldwide.
– New HIV infection by country