Word: spread
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Dates: during 1980-1989
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There are other, less popular, but more exotic packages available, such as helping Uncle Sam check the spread of the Communist menace in Honduras--all expenses paid. But the vast array of choices with so little time to decide might make you want to simply crawl into your closet and sleep for a week...
...needle sharing among drug addicts are still the major ways the AIDS virus is transmitted in the U.S. American victims are still overwhelmingly male: 92%. And though there is no doubt that heterosexual intercourse between intravenous drug users or bisexual men and their lovers is contributing to the spread of the disease, the number of AIDS cases traced to sex between men and women not in these high-risk groups is very low -- about 4% -- and has remained stable. But just what is the risk? How contagious is AIDS? What are the odds of picking up the virus from...
...vulnerability to the virus and in their tendency to transmit it to others by various routes. An AIDS carrier's infectivity -- his or her ability to pass the virus on -- may vary over time. Only now are researchers beginning to understand these differences and their implications for preventing the spread of the disease...
...quarterly journal AIDS Research and Human Retroviruses, may help explain why some AIDS carriers can go on having unprotected sex for years without passing the virus to a regular partner. Although it is known that enough of the virus appears in the bloodstream shortly after infection to spread the disease via blood transfusions, sexual transmission is a different matter. The new study, of 24 hemophiliac AIDS carriers, shows that despite repeated sexual contact without condoms, the wives or steady female partners of these men generally remained free of the virus for several years. But when signs of severe immune deficiency...
...Africa, where it is estimated that more than 2 million people have been infected with the AIDS virus, the disease strikes men and women equally. AIDS is spread among adult Africans primarily by vaginal intercourse, and it is rampant in the large, overcrowded cities of central and western Africa. Most AIDS researchers, however, now dismiss the suggestion that Africa might serve as a model for the heterosexual spread of AIDS in the U.S. For one thing, promiscuity and prostitution are common in parts of Africa, and general standards of hygiene and medical care are low. Scientists believe widespread venereal diseases...