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時間:2022-08-15 來源:本站 點擊:258次
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US authorizes 'mix******

The US Food and Drug Administration on Wednesday authorized using a so-called "mix-and-match" strategy for people who require a booster shot of a COVID-19 vaccine after their primary series.

"The FDA has determined that the known and potential benefits of the use of a single heterologous booster dose outweigh the known and potential risks of their use in eligible populations," the agency said in a statement.

The Pfizer, Moderna and Johnson & Johnson vaccines are authorized in the United States. A single dose of any of them may now be used following completion of primary vaccination with a different COVID-19 vaccine.

According to the new decision, people who received two Moderna shots initially and are 65 or older, over 18 and at high risk for COVID-19, or over 18 and have high occupational exposure, may now receive a booster.

All adults who received the one-shot J&J vaccine more than two months ago are also eligible for a booster.

Previously, only immune compromised people or people who belonged to elderly or high-risk groups and had received the Pfizer vaccine initially were eligible for a boost.

The data supporting the decisions come from emerging research reviewed by the FDA.

"Today's actions demonstrate our commitment to public health in proactively fighting against the COVID-19 pandemic," said acting FDA commissioner Janet Woodcock.

The statement also cautioned of highly rare side effects associated with the vaccines.

The messenger RNA vaccines, Pfizer and Moderna, have been associated with increased risks of inflammatory heart conditions, myocarditis and pericarditis, especially in younger males.

The J&J vaccine has been linked to a serious and rare type of blood clot in combination with low blood platelets one or two weeks after administration. The risk is highest among females ages 18 through 49 years.

拯救者Y9000K 2021探索版预热:mini******

10月25日,联想拯救者官微预热拯救者Y9000K 2021 探索版,新品将采用mini-LED屏幕背光技术。

拯救者Y9000K 2021 探索版的屏幕拥有高达10000+颗灯珠,可实现1152分区精准控光,可达1250nits最高亮度。这块屏幕还通过DisplayHDR 1000认证,支持杜比视界。

此外,拯救者Y9000K 2021 探索版采用真空腔均热板(VC),使用液态金属导热技术,带来更强的散热性能。


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观赏化石展品、挖掘野外化石 ,小学生们体验当地质科考员******

原标题:观赏化石展品、挖掘野外化石 ,小学生们体验当地质科考员

地质大学副研究员肖异凡老师讲解化石。陈政燃 摄

长江日报融媒体4月20日讯20日,武汉中华奇石馆携手中国地质大学(武汉)地球科学学院开设“世界地球日”科普系列活动第二场,16个亲子家庭在奇石馆观赏化石展览,接着前往中国地质大学,参观地质过程与地质矿产国家重点实验室,还在地学之光科普讲解对的带领下参观化石林并前往去江夏采集化石,用一整天的时间对话化石,收获满满。

地大岩石圈地球化学研究生党支部党员引导小学生参观国家重点实验室。陈政燃 摄

早上8点,孩子们早早抵达武汉中华奇石馆化石馆一楼,在中国地质大学副研究员肖异凡老师的带领下,参观海百合、鱼龙和三叶虫等古老生物的化石展品。“从化石上可以看到,三叶虫喜欢聚集在一起,排排走;遇到危险的时候,它们会卷成一个球,像个西瓜一样。”

“那谁会吃掉三叶虫呢?”来自黄陂街小学三年级的黄少泽提问,肖异凡老师说,三叶虫生活的寒武纪时代,霸主大奇虾体长可达2米,一口就能把三叶虫给吞掉。

小学生跟随老师在江夏采集化石。陈政燃 摄

吃过午饭,在地质大学王珩老师的带领下,孩子们来到江夏灯风上体验挖掘化石。来自汉铁小学三年级程星怡的妈妈说,在野外采集化石,真的不容易,让孩子体验地质科考员的工作,可以让他们更加了解我们的环境和地球,十分有意义。

据武汉中华奇石馆化石专家王祥波说,今年还将陆续推出此类亲子科普活动,欢迎小学生报名,详情请关注“武汉中华奇石馆”官方微信号。(记者郭可滢 通讯员王祥波 王珩)

作者:郭可滢 王祥波 王珩

China's fiscal revenue up 14.5 pct in first 10 months******

BEIJING, Nov. 19 (Xinhua) -- China's fiscal revenue logged a year-on-year increase of 14.5 percent in the first 10 months of the year, official data showed Friday.。

The country's fiscal revenue amounted to 18.15 trillion yuan (about 2.8 trillion U.S. dollars) during the period, according to data from the Ministry of Finance. Enditem。

北京国际电影节13日开幕 郭富城担任宣传推广大使

1.新疆军区总医院野战医疗队:在生命禁区守护生命

2.广州二手房挂牌量超过11万套,增城有楼盘降价20%

3.皇马开场6分钟丢球,阿尔梅里亚前锋单刀破门

4.兑付完5亿美元债的建业 依然被惠誉认为流动性紧张展望负面

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