黄石中心静脉穿刺插管模型(杭州晶状体、虹膜、角膜、玻璃体) (今日更新中)

The U.S. will pay drug company Pfizer .95 billion to produce and deliver 100 million doses of the company's COVID-19 vaccine candidate should the drug prove effective in human trials the company said in a press release on Wednesday.Pfizer will deliver the vaccine if and when the drug receives Emergency Use Authorization from the FDA after a large-scale Phase 3 trial.According to the reports, the deal includes an option for the government to purchase an additional 500 million doses of the vaccine.“Expanding Operation Warp Speed’s diverse portfolio by adding a vaccine from Pfizer and BioNTech increases the odds that we will have a safe, effective vaccine as soon as the end of this year,” Health and Human Services Sec. Alex Azar said in a statement. “Depending on success in clinical trials, today’s agreement will enable the delivery of approximately 100 million doses of this vaccine to the American people.”Pfizer and German firm BioNTech are working together to develop the vaccine.On Monday, Pfizer said in a press release that results from Phases 1 and 2 of a German trial indicated that the drug "could potentially be administered safely, with a manageable tolerability profile," according to data from the tests.Biotech company Moderna is also working to develop a coronavirus vaccine. That candidate will move into Phase 3 testing by the end of the month, and the government has also agreed to purchase and distribute the drug should the large-scale test prove effective. 1497

The wild ride on Wall Street just got crazier.The Dow dropped about 345 points, or 1.4%, on Tuesday, completely reversing a 244-point gain from early in the day. The selloff followed Monday's 670-point spike.The Nasdaq plunged nearly 3% -- wiping out nearly all of Monday's huge gains for the tech sector. The Nasdaq is now up just 1.5% on the year.Facebook, Twitter, Tesla and Nvidia all fell sharply. Netflix tumbled 6%, its biggest decline in two years."We started bleeding when large tech got hit hard," said Art Hogan, chief market strategist at B. Riley B.Investors poured money into bonds Tuesday. The 10-year Treasury yield slipped to 2.77%, the lowest since early February.But the sinking yields also narrowed the closely-watched gap between short and long-term rates, known as the yield curve."That has persistently been a signal of an economic slowdown," said Hogan. "I don't think that's the case here."A "flattening" yield curve also makes it harder for banks to make money on the difference between what they lend out and pay interest on. Bank of America, Wells Fargo and PNC fell more than 2% apiece.The-CNN-Wire 1135

The same day that the First Baptist Church of Sutherland Springs held its first service since a gunman opened fire on parishioners last week, killing 25 people and an unborn child, residents and visitors got to see how the church had been turned into a memorial.On Sunday evening, the church opened its doors and invited the public inside the sanctuary, which had been emptied and transformed into a memorial, completely covered from floor to ceiling in white.Those who visited found 26 roses on 26 white chairs, representing each of the victims who lost their lives. 575

The Trump administration is pushing back on a New York Times report that Education Secretary Betsy DeVos is looking into a plan that would allow states to use federal funding to buy firearms for teachers.On Wednesday, the Times reported that the Education Department was considering using a grant program called the Student Support and Academic Enrichment Program as a way to give federal funding for firearm purchases to states or school districts. The report cited multiple people with knowledge of the plan.A senior administration official told CNN that the idea laid out in the Times report did not originate with the Department of Education or DeVos. That official said the department received a letter from the Texas state Department of Education asking if the funds from a federal grant program could be used to purchase firearms. It was circulated to departmental lawyers and researchers for guidance, according to the official. The department ultimately chose not to respond, the official said.The official added that DeVos thinks that Congress should take action to clarify whether or not using the grant funding to buy guns is permissible. Moreover, the Education Department believes the grant program is intentionally vague to give school districts flexibility, and the idea of purchasing firearms was likely not considered when it was written, according to the official.In response to the Times report, Education Department spokeswoman Liz Hill told CNN that "the department is constantly considering and evaluating policy issues, particularly issues related to school safety. The secretary nor the department issues opinions on hypothetical scenarios."The discussion around arming teachers has been a deeply controversial one. President Donald Trump floated the proposal to arm educators and school staff on multiple occasions in the wake of the deadly school shooting at Marjory Stoneman Douglas High School in Parkland, Florida in February 2018."If you had a teacher who was adept with the firearm, they could end the attack very quickly," Trump said during a listening session on school safety a week after the shooting.The idea of arming school staff has been met with sharp condemnation.Former Congresswoman Gabrielle Giffords said in a statement Wednesday that "arming teachers is not a solution.""It recklessly puts American children in even more danger," she said in response to the Times report. "It's time for Americans to find the courage to take on the powerful and fight for our own safety."The American Federation of Teachers and the National Education Association also lambasted the proposal. Nicole Hockley, whose six-year-old son was killed in the 2012 Sandy Hook Elementary School shooting, took the microphone and told Trump she would rather arm teachers with ways to prevent shootings in the first place rather than with a firearm.Despite the criticism, Trump doubled down on the proposal on several subsequent occasions, and in March, the Trump administration proposed providing some school personnel with "rigorous" firearms training.In the wake of the Parkland shooting, the Trump administration also created a federal school safety commission, which is chaired by DeVos. In June, she testified before a congressional committee that the commission would not focus on looking at the role the role of guns in school safety. That stance was panned during a public forum. Democrats on the House Committee on Education and the Workforce have called on DeVos to explain how the commission will explore the role of guns."The Commission was charged with recommending policies and funding proposals to prevent school violence," 17 members of the committee wrote in a letter in June. "A core element of combating school violence is addressing gun violence, both in school and in our communities."The-CNN-Wire 3843

The US Consumer Product Safety Commission (USPSC) announced Wednesday that it is issuing a recall of Xtava Allure hair dryers due to concerns that they could catch fire or deliver electrical shocks.According to the USPSC, the recall affects more than 200,000 hair dryers.Nearly 200 people have reported the dryers and power cords have either "overheated, melted, exploded or caught fire" while in use. Eighteen people sustained burns while using the product, with one of those being classified as a "severe" burn.The dryers were sold online at Amazon, eBay, Walmart and Groupon, in addition to Xtava's own website. They were sold individually or in a hair care pack that included "treatment products, a flat iron or a diffuser."The affected products include the following SKU numbers on a label on the back:  XTV010001, XTV010001N, XTV010002, or XTV010002N.Those with the dryers should contact Xtava directly. Visit their recall website here.Alex Hider is a writer for the E.W. Scripps National Desk. Follow him on Twitter @alexhider. 1082

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