古努比亚人居住的地区经常发生斑疹伤寒，但令人惊讶的是，他们的骨骼中很少有这种疾病的常见证据。

The ancient Nubians inhabited an area in which typhus occurs, yet surprisingly few of their skeletons show the usual evidence of this disease.

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目前，归为弯曲杆菌属的细菌有17个菌种和6个亚种，其中在人类疾病中最经常报告发生的为空肠弯曲菌（空肠亚种）和大肠弯曲菌。

Currently, there are 17 species and 6 subspecies assigned to the genus Campylobacter, of which the most frequently reported in human diseases are C. jejuni (subspecies jejuni) and C. coli.

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此研究预估了指定地区特定疾病的发生率以及经常吸二手烟的人数。

The study used estimates of the incidence of specific diseases and of the number of people exposed to second-hand smoke in particular areas.

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