In most communities women living with HIV who decide to have children are criticized and blamed for infecting their children.

The only pathogens that get transmitted are the ones that are infecting people that feel healthy enough to walk outside and get mosquito bites.

Its closest relative is, in fact, from mice, and so we would call this a xenotropic retrovirus, because it's infecting a species other than mice.

So if you are a virus writer and you're capable of infecting Windows computers, but you don't know what to do with them, you can sell those infected computers somebody else's computers to these guys.

Memory B cells turn into plasma cells, which produce wave after wave of the specific antibodies that latch onto HIV to prevent it from infecting cells, while squadrons of killer T cells seek out and destroy cells that are already HIV infected.

Mother to child transmission (MTCT) may take place during pregnancy, childbirth, or while breastfeeding, in which case mothers with HIV are held to be solely responsible for infecting their child, thus constituting another source of gender discrimination for women living with the virus.

They played a tremendous role in the erosion of the Soviet system .They kept infecting more and more people over the years. Yet today, the Bush administration oversees a cumbersome visa program that has cut the number of such exchanges, particularly with Muslim countries.

Oleg Kalugin, who became a high KGB official, said in looking back from the vantage point of 1997, Exchanges were a Trojan Horse for the Soviet Union. They played a tremendous role in the erosion of the Soviet system .They kept infecting more and more people over the years.

What is killing the Tasmanian devil? A virulent cancer is infecting them by the thousands and unlike most cancers, it's contagious. Researcher Elizabeth Murchison tells us how she's fighting to save the Taz, and what she's learning about all cancers from this unusual strain. Contains disturbing images of facial cancer.

So these programs and I'm going to refer to PMTCT though my talk these prevention programs, simply, they're the tests and the drugs that we give to mothers to prevent them from infecting their babies, and also the medicines we give to mothers to keep them healthy and alive to raise their children.

On one side of the Atlantic, American lawyers are prosecuting Nazi doctors at Nuremberg for crimes against humanity so called research carried out on concentration camp prisoners. On the other side of the Atlantic, in Guatemala, the United States Public Health Service (PHS) is deliberately infecting prisoners and mental patients with syphilis in another experiment aimed at replacing the ineffective drugs used by soldiers during the war that had just ended.