Eastern Europe and Central Asia are witnessing the fastest spread of the HIV virus in the world with more than 8o% of the infected under 30 years of age, according to a UNICEF report.
"Eastern Europe and Central Asia are the only parts of the world where the HIV epidemic remains clearly on the rise," it said in a report published Monday at the 18th International AIDS Conference in Vienna.
In parts of Russia, the rate of HIV infections has gone up by 700 percent since 2006, said the report, "Blame and Banishment: The underground HIV epidemic affecting children in Eastern Europe and Central Asia."
And a third of new infections in the whole region affected teenagers and young adults between 15 and 24, the UN's child protection agency noted.
One of the main causes for this drastic increase was drug use and the sharing of needles in a region that counts 3.7 million injecting drug users: about 25 percent of the world's total, said the report.
And the drug users were starting as early as 12 years old, it added.
Sexual transmission had also turned recently into a major cause of the HIV spread: some 80 percent of sex workers in eastern Europe and central Asia were young people, said UNICEF.
Many of them were selling sex to support their drug habit.
The report thus painted a picture of those most at risk being young, marginalised people uncared for by their families or living in the street.