Dateline: MEXICO CITY
THE VIRUS IS WINNING
In the battle against the Human Immunodeficiency Virus, the virus is winning.
33 million people are living with HIV infection according to 2007 figures from UNAIDS. This increase is a result of new infections and the beneficial effects of more widely available antiretroviral (ARV) therapy.
Three million people are now on ARV drugs. But, for ever person who starts treatment, two or three more are newly infected.
The call here, at the XXVII International AIDS Conference, is for universal and free access to HIV/AIDS treatment by 2010.
Offical Conference Press Releases
CLINICAL TRIALS FAILING
At the last conference of the International AIDS Society, the host of this event, in Toronto, there was great talk and hope for the development of vaccines or microbicides to fight the epidemic. But, nascent clinical trials for both have come up short. Still, those here insist that we learn something from each failed trial, and that we must continue to devote substantial funds to find a cure.
FUNCTIONAL CURE
However, Tony Fauci, a leader on global AIDS issues, says we may have to accept a ‘functional cure’ where early aggressive drug therapy allows people infected with HIV to live long, relatively healthy lives. HIV is becoming a widespread, treatable, chronic disease.
COMBINATION STRATEGIES
The talk here is to combine all known prevention and treatment strategies in a coordinated effort to treat existing infections and prevent future ones. Dr. Kevin De Cock, the Director of the World Health Organization, says we have to make that link strong and indivisible. Best to use whatever works for short-term gains while searching for a long-term solution.
TREAT EVERY INFECTED PERSON
And a dialogue is beginning on starting drug therapy sooner in patients, before their T-cell counts fall below 200, the current benchmark on when to begin therapy.
One idea presented here is creating quite a stir. A Canadian study suggests that since HIV patients whose viral loads are undetectable are believed to be less infectious, why not treat EVERY infected person, with the goal of eliminating their viral loads and thus preventing future transmissions? Dr. Julio Montano, of the Canadian group and the President-Elect of the International AIDS Society, says, ‘Basically, the more people you treat and the faster you engage people in treatment, the greater impact you will have on the epidemic.’
LYING IN WAIT
But, the virus may be too smart for even that approach. It knows how to lie in wait.
According to Dr. Robert Siliciano of Johns Hopkins University School of Medicine, when a person is first infected with the virus, the virus establishes itself in a stable reservoir, from which it begins replicating itself. When drug therapies start on that patient, the treatment attacks the replicated viruses. Viral load can drop to undetectable levels. But, there is still the original virus hiding in the reservoir, undetected. If the patient were to stop or slow therapy, those latent viruses would start replicating again and return the patient to his/her original level of infection.
PRE-EXPOSURE STUDIES
As early as next year we’ll see the results from trials of antiretroviral drugs being tested for HIV prevention, known as PrEP, or pre-exposure prophylaxis. Underway in Africa, Asia, Latin American and North America, PrEP is an unproven strategy in which HIV negative people could take an ARV, or combination of ARVs, on a regular basis in the hopes of reducing their risk of acquiring HIV.
HERE, THERE, EVERYWHERE
The goal of all viruses is to adapt and multiply. And HIV is a master at that.
Peter Poit, the Executive Director of UNAIDS, warned that the virus is always a step or two ahead of us. As we come to grips with the spread of the virus in one group or one geography, it finds another group in another location – married women in one locale, men who have sex with men in another, intravenous drug users somewhere else.
He also was less optimistic about a cure and said our goal is to keep anyone from dying of AIDS and to give those living with HIV a good life. To that end, he called for changing the funding model from an insurance scheme to a pension scheme. He said instead of protecting against unknown events, we should accept the fact that we need to plan for known events, i.e., that millions of people are and will be infected with HIV and are entitled to a full and healthy life.
AIDING HEALTH SYSTEMS
All across the world countries have to deal with this epidemic. Yet, in so-called resource poor nations, that is an overwhelming struggle. They are simply not medically equipped enough to meet the challenge. Speakers here noted that improving AIDS programs around the world will help build and strengthen all health systems. This disease may become a coalescing factor to bring coordinated, universal health care to millions around the globe.
RICHER, POORER
But, mocking the call for free drugs for everyone by 2010, the rich still fare better with this disease than the poor. Dr. Anton Pozniak of Advances in ART pointed out, antiretroviral therapy only works if you have access to it and you stay on it. As he and others said, access to newer therapies by poor people and countries is still a major problem.
SOCIAL CHANGE
And, of course, there are substantial governmental, cultural and organizational barriers to a successful battle against this disease.
Speaker after speaker here decried the fact that in too many countries there are harsh laws against homosexuality and increasing calls for the criminalization of people living with HIV/AIDS. In too many places, violence against those with HIV is rampant and, sometimes, sanctioned.
Dr. Jorge Saavedra Lopez, the head of the National HIV/AIDS Programme in Mexico reported that, all across the world, the existence and infection rate of men having sex with men is under reported because those MSM are living in the shadows.
For almost every group stigmatized by this epidemic – MSM, intravenous drug users, sex workers, trans-genders, and women in general – there was a loud and consistent call for basic human rights and protections.
SURVIVING EACH OTHER
A successful virus wants to live and thrive in its host. It does not want to kill it. More and more humans are now living with HIV. That’s good for us. But, it’s also good for the virus. We're now surviving each other.