The World Health Organization (WHO) has failed to decide when to destroy the worlds last two remaining stocks of the virus that causes smallpox. A meeting of the WHO's decision-making body, the World Health Assembly, this week was supposed to produce a deadline, but the organization ended up deferring judgement until the 67th assembly meeting, in 2014. A US resolution calling for the stocks to be maintained for at least another five years ran into opposition led by Iran. See go.nature.com/7gmgck for more.
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