狱警称之为囚犯间蔓延的“手机流行病”，而全国上下的州立监狱和联邦监狱都在与这种流行病做斗争。
State and federal prisons across the country are grappling with what officials say is an epidemic of cell-phone use among inmates.
流行病学家分析了迄今为止流感传播的模式，他们指出，H1N1型流感正在迅速蔓延，足以证明为流感大流行准备充足的药物是正确的。
H1N1 swine flu is spreading fast enough to justify the preparations for a pandemic, say epidemiologists who've analysed the pattern of spread so far.
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