Smokers are about twice as likely to get the lung infection and die from it, compared with non-smokers.

相较而言，吸烟者得肺部感染以及死于肺结核的可能性大约是不吸烟者的两倍。

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In the earliest stage of infection, symptoms are non-specific and may be easily confused with more common diseases, including malaria, yellow fever, and typhoid fever.

在感染的最初阶段，症状为非特异性并可容易地与包括疟疾、黄热病和伤寒在内的较常见疾病相混淆。

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It bridges the gap between an infection that does no harm to most non-human primates and one that kills millions of people.

它填补了对大多数非人类灵长类动物无害的感染病毒与能造成数百万人死亡的感染病毒之间的空白。

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Eight out of ten sportsmen studied by Oyudo had an infection call non-specific urethritis, and two tested positive for chlamydia, another sexually-transmitted disease.

BBC: News | Health | Sexual athletes could wreck sporting careers

One must also point out that Robinson et al did not find higher rates of XMRV infection in cancerous versus non cancerous sequences which is a serious departure from the results of other workers.

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More broadly, the principle upon which immunisation is based - namely, exposure to a non-harmful version of the naturally occurring infection in order to induce a natural and protective immune response - can be seen to be a far more natural process than the drug- and surgery-based therapies most widely venerated as the main achievements of modern medicine.

BBC: 'The natural benefits of vaccines'