湖北胎儿畸形模型（8部件）(浙江外科手术技能训练仿真模型) (今日更新中)

The FDA has ended an emergency use authorization (EUA) order for hydroxychloroquine, saying that the agency has determined that drug is "unlikely to be effective in treating COVID-19."In the announcement, the agency said that the benefits of hydroxychloroquine and a related drug, chloroquine phosphate, "no longer outweigh the known and potential risks for the authorized use."The FDA issued the EUA for the drug in March. In April, the FDA warned that the drug should only be used in hospital settings due to the severe side effects some experienced while taking the drug.Shortly after the coronavirus arrived in the United States, President Donald Trump touted the drug as a potential treatment for the disease. He encouraged those sickened with the virus to take the drugs, saying, "what do you have to lose?"Trump said he took the drug for a few weeks in May as several White House staffers contracted the virus. In an open letter, White House physician Sean Conley said he prescribed the drugs after determining that the "potential benefit from treatment outweighed the relative risks."Earlier this month, a study showed that the drug was likely not effective in treating COVID-19. That study was published just days after a separate study — which determined that people who took the drugs died at a higher rate than those who did not take the drugs — was retracted by three of its authors. 1404

The chairman of the Joint Chiefs of Staff has confirmed a report by The Associated Press that some of the service members who deployed to Washington, D.C., last month in response to civil unrest were issued bayonets. Army Gen. Mark A. Milley confirmed the information in a letter sent to two Democratic U.S. representatives last month. The Pentagon letter comes as the AP also reports that members of the 82nd Airborne who deployed to Washington were not trained in riot response. The soldiers were scheduled to learn riot control tactics once arriving. The soldiers were ultimately not used and were sent back to their home base. 638

The FBI continues to investgate reports of a #jetpack near #LAX on 8/30. Anyone with info about activity on or above the ground at the location depicted here should call the FBI. The FBI takes seriously events that threaten US airspace & investigates alleged violations #SafeSkies pic.twitter.com/dLZcZeRDuc— FBI Los Angeles (@FBILosAngeles) September 4, 2020 377

The Centers for Disease Control and Prevention issued new guidance that recent studies have indicated that cloth masks offer more protection against the coronavirus than previously thought.Previous guidance suggested that masks were best used for preventing the spread of the virus. The CDC now believes that masks are effective for both stopping the spread and reception of the virus. The CDC said on Tuesday that multi-layer cloth masks can both block up to 50 to 70% of fine droplets and particles and limit the forward spread of those that are not captured. Overall, cloth masks offer up to 80% blockage in human experiments. The CDC’s analysis found that cloth masks offer comparable protection as surgical masks.“Studies demonstrate that cloth mask materials can also reduce wearers’ exposure to infectious droplets through filtration, including filtration of fine droplets and particles less than 10 microns,” the CDC’s guidance said. “The relative filtration effectiveness of various masks has varied widely across studies, in large part due to variation in experimental design and particle sizes analyzed. Multiple layers of cloth with higher thread counts have demonstrated superior performance compared to single layers of cloth with lower thread counts, in some cases filtering nearly 50% of fine particles less than 1 micron.”The guidance says that mandatory mask wearing can help prevent the need to implement economic shutdowns.“Adopting universal masking policies can help avert future lockdowns, especially if combined with other non-pharmaceutical interventions such as social distancing, hand hygiene, and adequate ventilation,” the CDC said.In an interview with Andrea Mitchell of MSNBC, Dr. Anthony Fauci said that wearing masks is “two-way street.”"Recent data has now shown that as a matter of fact, there's also the added benefit to protect you from droplets and virus that's coming your way," Fauci said Tuesday on MSNBC."“You protect others," he added. "Their masks protect you. And your mask also protects you."In a separate interview on Tuesday, Fauci said that shut downs can be avoided.“We are not talking about shutting down,” Fauci told CNN’s Jake Tapper. “There is always that misunderstanding when we talk about public health measures. We are not talking about shutting down. We are talking about the four or five things I talk about all the time, wearing mask universally, keeping a distance, avoiding congregate settings indoors over outdoors and washing your hands.”Editor's note: A previous version of this story said "masks were best used for spreading the virus" when it should have said "masks were best used for preventing the spread of the virus." That has since been corrected. 2729

The classified ads website Backpage.com has been seized by federal law enforcement agencies, according to a banner that popped up on the site Friday.The banner says, "backpage.com and affiliated websites have been seized as part of an enforcement action" by the FBI, US Postal Inspection Service and the IRS Criminal Investigation Division.Lawmakers on Capitol Hill and advocacy groups have long called for an investigation into Backpage.com for allegedly facilitating prostitution and sex trafficking.A spokesperson for the Justice Department confirmed to CNN that the website has been seized and that additional information would be made available Friday evening. However, a judge decided that the federal case should remain sealed on Friday night. No other additional information was provided.A two-year Senate investigation into online sex trafficking found that found that Backpage.com knowingly aided criminal sex trafficking of women and young girls, simply scrubbing terms from ads such as "Lolita," "teenage," "rape," "amber alert," and publishing them on its site. After the investigation was published in January 2017, Backpage.com shut down its adult ads section.The company has been targeted with several lawsuits over the years, but has been largely protected by Section 230 of the 1996 Communications Decency Act, a legal protection that gives a broad layer of immunity to online companies from being held liable for user-generated content. Companies are supposed to act in good faith to protect users, but critics argue the law can be used as a shield. The law, however, does not, protect sites from federal liability against criminal law, like child-pornography laws.Last month, however, the Senate approved bipartisan legislation called the Stop Enabling Sex Traffickers Act. The legislation would create an exception to Section 230, which would pave the way for victims of sex trafficking to hold websites accountable for facilitating abuse.Two days after the Senate approval, Backpage competitor Craigslist removed its personal ads section.The-CNN-Wire 2080

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