The mutation to a drug-resistant strain was always probable.

"I do want to caution that many kids around the world have been treated, and, having gone through this with the MS child, I think it's important to know this is a very rare outcome, a notable outcome, but not a common one", she said.

At the global level, the donations government fell previous year to their lowest level since 2010 - seven billion dollars (6.4 billion euros) against $ 7.5 billion in 2015, according to the Kaiser Family Foundation. The cost the HIV response is expected to peak to around $26.2 billion in 2020.

Many people have become complacent about HIV since the arrival of cheap and effective ARV treatment meant that no one had to die of Aids any longer and the disease was seen as a nuisance rather than a killer.

Prof Lewin who is now researching on this thinks that immunotherapy drugs could revive an immune system that has become exhausted of fighting HIV. Southern and eastern Africa have shown the most progress in fighting the virus.

After almost two years, 94 percent on eight-week shots, 87 percent on four-week shots and 84 percent on daily pills had their infections suppressed, with similar rates of side effects.

In addition, World Health Organization has developed new tools to help countries monitor HIV drug resistance, improve the quality of treatment programmes and transition to new HIV treatments, if needed.

They hope that finding answers could lead to a new drug or vaccine to stop the virus in its tracks.

Some people are naturally better at dealing with an HIV infection - so-called "elite controllers". And it is the reason we continue to have this high rate of infection as that there are a lot of men, who go untested and who do not know their status.

AIDS claimed a million lives in 2016, nearly half the 2005 toll that marked the peak of the deadly epidemic, a United Nations report said on Thursday proclaiming "the scales have tipped". This figure is down from 1.9 million in 2005, a 47 percent decline. Malawi, Mozambique, Uganda and Zimbabwe have gone further, cutting new HIV infections by 40 percent or more since 2010.

After 32 weeks, HIV remained suppressed in 91 percent of those taking the drugs orally, in 94 percent of those receiving monthly injections and in 95 percent of patients receiving injections every two months, the researchers found.

The number of AIDS-related deaths in eastern and southern Africa previous year.

The only region in the world where new HIV infections and AIDS-related deaths increased was Eastern Europe/central Asia.

Global and Viet Nam's progress against the 90-90-90 targets has been significant, but there is still more work to do.

Singapore was in the company of Cambodia, Botswana, Denmark, Iceland, Sweden and Britain in achieving the 90-90-90 targets.

During the second session, which dealt with the challenges key populations - men who have sex with men, sex workers, members of the transgender community, people who inject drugs and people detained in correctional facilities - face, Tiffany Lillie, senior technical adviser at an worldwide HIV organisation dealing with these communities emphasised that "the care continuum" consists of prevention, testing, treatment and viral load suppression.