问题描述：
英语翻译
as of dec 31,2009,beijing have reported only 10799 cases of influenza A(H1N1) infection,indicate that 相当比例的influenza A(H1N1) infection cant confirmed by influenza surveillance network lab,and 1 laboratory confirmed cases of influenza A(H1N1) infection actually represents 176 (90% 区间:153 204),because 一定比例的patients without any clinical symptoms,the part of symptoms patients have 流感样 symptoms,but not all of cases with 流感样symptoms sampling by doctor,therefore,the reported of influenza A(H1N1) cases cant reflect the epidemic all,it's only "tip of the iceberg"
as of dec 31,2009,beijing have reported only 10799 cases of influenza A(H1N1) infection,indicate that 相当比例的influenza A(H1N1) infection cant confirmed by influenza surveillance network lab,and 1 laboratory confirmed cases of influenza A(H1N1) infection actually represents 176 (90% 区间:153 204),because 一定比例的patients without any clinical symptoms,the part of symptoms patients have 流感样 symptoms,but not all of cases with 流感样symptoms sampling by doctor,therefore,the reported of influenza A(H1N1) cases cant reflect the epidemic all,it's only "tip of the iceberg"
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