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【西双版纳热带雨林】西双版纳热带雨林是当今我国高纬度、高海拔地带保存最完整的热带雨林,具有全球绝无仅有的植物垂直分布“倒置”现象[弗莱见钱眼开]。它的热带雨林、南亚热带常绿阔叶林、珍稀动植物种群,以及整个森林生态都是无价之宝,是世界上惟一保存完好、连片大面积的热带森林,深受国内外瞩目。[男孩儿]#重庆旅行攻略# https://t.cn/E2AOFBv
【巴斯德最新研究:#法国流行病毒样本最早可溯携带者无国外旅行史# 】法国巴斯德研究所发布的研究表明,1月份来自中国的输入病例当时已得到控制,并没有在法国广泛传播。法国现今流行的病毒样本中,最早是2月19日从一名患者身上采集,该患者没有国内外旅行史,也没和海外归国的旅行者接触过。该患者于2月25日去世,随后法国疫情大规模爆发。A genetic study by scientists in France's Pasteur Institute revealed that the COVID-19 outbreak in France was caused by a locally circulating strain whose genomes fall in clade G, rather than early cases from China whose genomes fall within clade V. The early introductions from Hubei, China "do not appear to have resulted in local transmission," the study showed. "In parallel, our genomic data reveals the later predominant circulation of a major clade in many French regions, and implies local circulation of the virus in undocumented infections prior to the wave of COVID-19 cases." The study also noted one of the earliest representatives of the French clade was sampled on February 19 from a patient who had no travel history and no contact with travelers returning from overseas. The patient passed away on February 25, and then came a wave of outbreaks in France.
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