Research on influenza pandemics and pandemic viruses increased considerably following the first human cases of infection with the H5N1 avian influenza virus in 1997.

在1997年发现首批人患H5N1禽流感病毒感染病例之后，大大加强了对流感大流行和大流行性病毒的研究力度。

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While intestinal bleeding was serious, research suggested that aspirin increased the risk only of less serious cases, said Prof Elwood.

虽然肠道出血是危险，研究表明，阿司匹林只增加病情不太严重的患者的风险，埃尔伍德教授说。

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"In most cases, it's all kind of guesses because we don't have samples," says Scott Sandford, an astrophysicist at the NASA Ames Research Center.

来自美国宇航局艾姆斯研究中心的天文物理学家斯科特·桑福德说：“在大多数情况下，因为没有标本样品，具体联系都是靠猜测得出的。”

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Scientists say progress in medical research could reduce the number and severity of malaria cases worldwide.

VOA: special.2010.04.20

He pointed out the research suggested 400 cases of TB cases among asylum seekers could have been spotted, but said during that period there were 27-28, 000 cases of TB.

BBC: Extended TB screening 'crucial'

But a second piece of research looked at 14 fatal cases and found that in five there was evidence of pre-existing pulmonary-embolic disease, and in four the fatal clot had formed before the flight.

BBC: Jury out on DVT link say airlines

The group's research turned up numerous cases of transliteration fraud.

ECONOMIST: Computing: What's in a name? | The