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When scientists in Texas reported in January that they had successfully used antiretroviral drugs (ARVs) to prevent HIV transmission in lab mice, colleagues received the news with great enthusiasm - and no small amount of concern. Positive study results like these offer hope that ARVs may someday help stem the rate...
Doctors also worry that over the long term, people may build up resistance to ARVs - dangerous if a non-infected person takes the drugs prophylactically, then becomes infected later - or that HIV itself will become drug resistant. Greene says individuals using a single antiretroviral drug run a higher risk of...
Meanwhile, physicians are seeing an increase in HIV infection rates among sexually active gay men in the U.S., accompanied by rising syphilis rates, which can complicate treatment. In Africa, Greene says, there are "some islands of success" but troubling increases in HIV transmission in other regions. Public-health experts acknowledge...
It's not that the British are necessarily drinking all that much less; it's where they're doing their drinking that's hurting the country's 98,000 pubs. The British Beer and Pub Association claims beer sales at the pub are at their lowest level since the Great...
For environmentalists, that's the risk. Oil has spiked in the past, prompting a wave of investment in alternative energy that crashed as soon as petroleum prices dropped. Transitioning from fossil fuels to clean power will be a long, fraught process, and investors - whether they're pushing ethanol, hybrids or...