Others issue dire warnings about squalene, an immune booster used in military vaccines and in some European flu vaccines but not in any American ones.

还有一些出版物发布关于鲨烯的可怕警告，这是在军事疫苗和某些欧洲流感疫苗中的一种免疫增强剂，而任何美国流感疫苗中却不存在。

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Three cases in Germany and one in Austria means swine flu has spread to four European countries.

德国有三起，奥地利有一起，这意味着猪流感已经传播到四个欧洲国家。

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Spain remains the European country with the most cases of swine flu.

西班牙依旧是出现猪流感病例最多的欧洲国家。

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Germany and Austria became the latest European countries to report swine flu on Wednesday, while the number of cases increased in the United Kingdom and Spain.

CNN: WHO raises pandemic alert to second-highest level

Meanwhile, Britain's health secretary announced Friday that his country's Health Protection Agency had sequenced the full genetic code of the H1N1 virus, the first step in producing a European prototype of a swine flu vaccine.

CNN: WHO reports big jump in swine flu cases

Researchers at the London School of Hygiene and Tropical Medicine have also launched The Flu Survey, which has recruited volunteers from 10 European countries to report symptoms and provide weekly updates of the spread of flu across the continent.

BBC: Can crowdsourcing beat the flu?