Word: risk
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...changed, but the fundamental problem of developing an effective AIDS vaccine remains. On the positive side, in 2009, scientists announced that they had developed the first vaccine to show any effect against HIV infection - although that effect is, by all measures, modest. The vaccine's ability to reduce the risk of new HIV infection 31% is nowhere near the 70% to 90% that public-health experts normally view as a minimum threshold for an infectious-disease vaccine. Even further behind in development, but still promising, are two new antibodies identified by a group of researchers working at a number...
...efforts were progressing elsewhere in the AIDS community, but unevenly. Testing for one candidate, made by Merck, began in 2004 with much fanfare and ended three years later with disappointing results: not only had the vaccine not offered protection against HIV infection, but it actually seemed to increase the risk for some people. Because of the Merck results, the NIH, which had a similar vaccine in the works, put off plans for its own study...
...that makes sense. Having to sit for part of a flight will simply mean an adjustment in plans for a terrorist. And if we focus too much on Afghanistan, where our intelligence agencies say there are only 100 or so al-Qaeda operatives, we run the risk of taking our eyes off the prize and playing into the hands of the forces we are trying to defeat...
While I applaud the courage of the passengers on Flight 253, the government has no choice but to adopt a paternalistic approach. It cannot step up security without risking invasions of privacy. Nor can it place its trust in the public and risk another calamity for which it will be blamed...
...enough: in the 2000 Census, more than 56,000 people wrote in Negro to describe their identity - even though it was already on the form. Some people, it seems, still strongly identify with the term, which used to be a perfectly polite designation. To blindly delete it is to risk incorrectly counting the unknown number of (presumably older) black Americans who identify with the term. (See rare photos at home of Martin Luther King...