The US is one of only about a dozen countries which bars entry for those with positive HIV status. U.S. President Barack Obama said on Friday that the U.S. would lift the ban in 2010, confirming the move as he signed the Ryan White HIV/Aids Treatment Extension Act into law.

Researchers at UT Southwestern Medical Center have found that non-AIDS-defining malignancies such as anal and lung cancer have become more prevalent among HIV-infected patients than non-HIV patients since the introduction of anti-retroviral therapies in the mid-1990s.

In order to be able to ward off disease pathogens, immune cells must be mobile and be able to establish contact with each other. The working group around Professor Dr. Oliver Fackler in the Virology Department of the Hygiene Institute of the Heidelberg University Hospital has discovered a mechanism in an animal model revealing how HIV, the AIDS pathogen, cripples immune cells: Cell mobility is inhibited by the HIV Nef protein.

New research from UCSF examining HIV among men who have sex with men (MSM) in the township of Soweto in South Africa has found that a third of gay-identified men are infected with HIV.

Patients infected with a particular subtype of HIV, the virus that causes AIDS, are more likely to develop dementia than patients with other subtypes, a study led by Johns Hopkins researchers shows. The finding, reported in the September Clinical Infectious Diseases, is the first to demonstrate that the specific type of HIV has any effect on cognitive impairment, one of the most common complications of uncontrolled HIV infection.

HIV / AIDS is a big worry in the adult film industry, as one might expect. Thursday, two former adult film actresses, Jan Meza (left in picture) and Shelley Lubben, spoke at a press conference Thursday in Los Angeles with the AIDS Healthcare Foundation (AHF), an AIDS advocacy group, and The Pink Cross, a group that helps people exit the adult film industry, calling for condom use in all adult films.

With HIV patients living longer thanks to advances in treatment, the primary care needs of those living with HIV have never been more important. Updated, evidence-based guidelines from the HIV Medicine Association (HIVMA) and the Infectious Diseases Society of America (IDSA) are designed to help providers manage the care of those living with this complex chronic infection.

Researchers in Israel and Kenya have shown that the contribution of variable degrees of immune suppression, either due to existing chronic infections such as parasitemias and/or nutrition, in different populations may influence and prolong the serological-diagnostic window period of HIV.

Although the AIDS virus (HIV-1) entered the human population through chimpanzees, scientists have long believed that chimpanzees don't develop AIDS. But a new study from an international team, including University of Minnesota professors Anne Pusey and Michael Wilson, shows that chimpanzees infected with SIV (simian immunodeficiency virus), the precursor to HIV-1, do contract and die from AIDS. The discovery is published in the July 23 issue of Nature.

A new technique that detects the HIV virus early and monitors its development without requiring refrigeration may make AIDS testing more accessible in sub-Saharan Africa.

A team of researchers from The Wistar Institute and the University of Pennsylvania reports new evidence refuting a popular hypothesis about the highly publicized failure in 2007 of the Merck STEP HIV vaccine study that cast doubt on the feasibility of HIV-1 vaccines. The findings were published on-line July 20 in Nature Medicine.

Prolonged use of highly active antiretroviral therapy (HAART) to treat people infected with both HIV and hepatitis B (HBV) helps to better control the hepatitis B infection and could delay or prevent liver complications, according to a new study by researchers at Wake Forest University School of Medicine.