Looking for Vaccines That Pack a Wallop Without the Side Effects

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Science  20 Dec 2002:
Vol. 298, Issue 5602, pp. 2314
DOI: 10.1126/science.298.5602.2314

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Since the 11 September terrorist attacks, the quest for a safer smallpox vaccine has taken on a new urgency, drawing in a number of leading labs. Science discusses a few of the new approaches being tested.