H1N1表明容易人际间传播并且从美国的报告提出，某些病例可以很轻微并且在之前未察觉，而疾病却进一步传播。
H1N1 appears to be passed easily from person to person, and reports from the United States suggest that some cases may be mild and therefore may go undetected, allowing the disease to spread further.
官方数据显示感染者达21.3万多人，主要在亚洲和非洲，而2008年约有24.9万例是报告的新病例。
Official figures show that more than 213 000 people mainly in Asia and Africa are infected, with approximately 249 000 new cases reported in 2008.
据我们所知本区域是从技术角度而言阻断传播最具挑战性的区域，而一月份报告的脊灰病例是今年唯一的一例脊灰病例。
This year, only a single case of polio was reported, in January, from what we know is the world's most technically challenging area for the interruption of transmission.
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