| 钟雪珊,黄琼,李晖.诺如病毒GⅡ.4型变异株感染流行的研究进展[J].Chinese journal of Epidemiology,2013,34(8):849-851 |
| 诺如病毒GⅡ.4型变异株感染流行的研究进展 |
| Progress research on the epidemic situation of the norovirus genotype Ⅱ.4 variants |
| Received:March 07, 2013 |
| DOI： |
| KeyWord: 诺如病毒|GⅡ.4/Sydney_2012变异株|流行 |
| English Key Word: Norovirus|G Ⅱ.4 /Sydney_2012 variant|Epidemic |
| FundProject:广东省食品安全卫生应急技术研究中心资助(粤科函社字[2011]733) |
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| Abstract: |
| 诺如病毒是-种在全球范围广泛分布并引起急性感染性胃肠炎的病原体[1].美国每年约有1.79亿例急性胃肠炎感染者,其中超过50％(36％-59％)为感染诺如病毒所致;每年因诺如病毒感染导致住院病例可达70 000例,其中死亡800例,带来医疗负担高达2.84亿美元[2,3].包括美国在内,许多发达国家已建立了诺如病毒胃肠炎监测系统.本文主要对诺如病毒病原学和流行病学特征以及GⅡ.4型变异株在多国的流行概况进行综述. |
| English Abstract: |
| Compare the risks between multiple groups and to avoid bias, using arbitrary reference group. Floating absolute risks (FAR) is used to estimate the relative hazard ratios and to get the confidence intervals. From the example, FAR can describe the construction of standard error for all groups. It gets the relative hazard ratios and 95 % confidence intervals between any two groups; even if neither is used as baseline data. FAR can eliminate the bias in comparison of any two groups by selecting a baseline group. It is useful in many epidemiologieal studies. |
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