Nearly half of the 1.7 million children worldwide living with HIV were not on treatment last year, the UN program leading the global fight against HIV and AIDS, UNAIDS, said in a report released together with partners.

The final report from the Start Free, Stay Free, AIDS Free initiative, issued in Geneva on Wednesday, warns that progress on ending AIDS among children, adolescents and young women has stalled and requires urgent action.

The five-year framework began in 2015 and followed on from a global plan to reduce new HIV infections among children by that year, while also ensuring those living with HIV have access to antiretroviral therapy. The focus was on 23 countries, mostly in Africa.

The study shows that 150,000 children were newly infected, or four times more than the 2020 target of 40,000.

The total number of children on treatment also declined for the first time, despite the fact that nearly 800,000 children living with HIV are not currently on treatment.

Furthermore, opportunities to identify infants and young children living with HIV early are being missed, as more than a third of children born to mothers living with the virus were not tested. 

"Over 20 years ago, initiatives for families and children to prevent vertical transmission and to eliminate children dying of AIDS truly kick-started what has now become our global AIDS response. This stemmed from an unprecedented activation of all partners, yet, despite early and dramatic progress, despite more tools and knowledge than ever before, children are falling way behind adults and way behind our goals," said Shannon Hader, Deputy Executive Director, Program, at UNAIDS.

The agency issued the report alongside the United States President's Emergency Plan for AIDS Relief; the United Nations Children's Fund, UNICEF, and the World Health Organization (WHO), with support from the Elizabeth Glaser Pediatric AIDS Foundation.

The study reveals stark inequalities, as children are nearly 40 times less likely to be on life-saving treatment than adults.  Even though children account for five per cent of people living with HIV, they represent 15 percent of all AIDS-related deaths.

Meanwhile, the report documents progress in preventing HIV infections among adolescent girls and young women, with numbers declining by nearly 30 percent in the focus countries between 2015 and 2020.  However, the 200,000 who acquired HIV, represent twice the global target for 2020. 

Besides disrupting education, school closures due to the COVID-19 pandemic have also affected sexual and reproductive health services for adolescent girls and women, the authors said, underscoring the urgent need to step up prevention and outreach.

"The lives of the most vulnerable girls and young women hang in the balance, locked into deeply entrenched cycles of vulnerability and neglect that must urgently be interrupted," said Chewe Luo, UNICEF Chief of HIV and Associate Director of Health Program.

(With input from UN-News)