Word: viral
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This year, for the first time, there is something that looks like hope. Early this summer AIDS patients taking therapeutic "cocktails" that combine protease inhibitors with other antiviral drugs began experiencing remarkable recoveries. Their viral loads fell. Their T-cell counts climbed. Their health improved--perhaps temporarily, but often dramatically. Hospices and AIDS clinics across the U.S. began to empty...
...cells at random. It must first attach itself to a particular protein, called CD4, on the T cells' surface. Perhaps, researchers reasoned, if they flooded the bloodstream with free-floating CD4 molecules, the molecules would act as decoys and prevent HIV from infecting the T cells. Preliminary tests on viral samples grown under laboratory conditions showed that soluble CD4 worked beautifully...
...clinical trial of soluble CD4 in two dozen patients, many of them in the later stages of AIDS. Unfortunately, Ho and Schooley wound up proving that soluble CD4 doesn't work. In the process, however, they discovered something very interesting--that there were tens of thousands of infectious viral particles in their patients' bodies, a lot more than anyone had expected...
...easily forget that the United Nations is more than a glass and steel Secretariat in New York City and blue helmets peppered around the globe. Under the umbrella of the UN, the World Health Organization has eradicated smallpox worldwide and spearheaded efforts in the inoculation of children against viral disease. The United Nations High Commission for Refugees has regularly aided as many as 18 million displaced persons a year. UNICEF has campaigned for child welfare and education, other UN bodies have set up projects to champion women's rights in over 100 countries and brought safe drinking water...
...returns, stalking its victims through snowstorms and blizzards. And each year health officials race to stay ahead of the wily flu virus, which is constantly changing, by concocting new mixes of vaccines to head off novel strains. On the horizon are more sophisticated vaccines that incorporate a snippet of viral genome that is common to many strains. Once inoculated, a person would be protected against a number of different flu viruses for more than a year. Researchers have just begun testing the vaccine on people...