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濮阳东方妇科医院线上预约
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发布时间: 2025-05-31 22:44:19北京青年报社官方账号
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  濮阳东方妇科医院线上预约   

With a coronavirus vaccine still months off, companies are rushing to test what may be the next best thing: drugs that deliver antibodies to fight the virus right away, without having to train the immune system to make them.Antibodies are proteins the body makes when an infection occurs; they attach to a virus and help it be eliminated. Vaccines work by tricking the body into thinking there’s an infection so it makes antibodies and remembers how to do that if the real bug turns up.But it can take a month or two after vaccination or infection for the most effective antibodies to form. The experimental drugs shortcut that process by giving concentrated versions of specific ones that worked best against the coronavirus in lab and animal tests.“A vaccine takes time to work, to force the development of antibodies. But when you give an antibody, you get immediate protection,” said University of North Carolina virologist Dr. Myron Cohen. “If we can generate them in large concentrations, in big vats in an antibody factory ... we can kind of bypass the immune system.”These drugs are believed to last for a month or more and could give quick, temporary immunity to people at high risk of infection, such as health workers and housemates of someone with COVID-19. If they proved effective and if a vaccine doesn’t materialize or protect as hoped, the drugs might eventually be considered for wider use, perhaps for teachers or other groups.They’re also being tested as treatments, to help the immune system and prevent severe symptoms or death.“The hope there is to target people who are in the first week of their illness and that we can treat them with the antibody and prevent them from getting sick,” said Dr. Marshall Lyon, an infectious disease specialist helping to test one such drug at Emory University in Atlanta.Having such a tool “would be a really momentous thing in our fight against COVID,” Cohen said.Vaccines are seen as a key to controlling the virus, which has been confirmed to have infected more than 20 million people worldwide and killed more than 738,000. Several companies are racing to develop vaccines, but the results of the large final tests needed to evaluate them are months away.The antibody drugs are “very promising” and, in contrast, could be available “fairly soon,” said Dr. Janet Woodcock, a U.S. Food and Drug Administration official who is leading government efforts to speed COVID-19 therapies. Key studies are underway and some answers should come by early fall.One company, Eli Lilly, has already started manufacturing its antibody drug, betting that studies now underway will give positive results.“Our goal is to get something out as soon as possible” and to have hundreds of thousands of doses ready by fall, said Lilly’s chief scientific officer, Dr. Daniel Skovronsky.Another company that developed an antibody drug cocktail against Ebola — Regeneron Pharmaceuticals Inc. — now is testing one for coronavirus.“The success with our Ebola program gives us some confidence that we can potentially do this again,” said Christos Kyratsous, a Regeneron microbiologist who helped lead that work.Regeneron’s drug uses two antibodies to enhance chances the drug will work even if the virus evolves to evade action by one.Lilly is testing two different, single-antibody drugs — one with the Canadian company AbCellera and another with a Chinese company, Junshi Biosciences. In July, Junshi said no safety concerns emerged in 40 healthy people who tried it and that larger studies were getting underway.Others working on antibody drugs include Amgen and Adaptive Biotechnologies. The Singapore biotech company Tychan Pte Ltd. also is testing an antibody drug and has similar products in development for Zika virus and yellow fever.“I’m cautiously optimistic” about the drugs, said the nation’s top infectious diseases expert, Dr. Anthony Fauci. “I’m heartened by the experience that we had with Ebola,” where the drugs proved effective.What could go wrong?— The antibodies may not reach all of the places in the body where they need to act, such as deep in the lungs. All the antibody drugs are given through an IV and must make their way through the bloodstream to wherever they’re needed.— The virus might mutate to avoid the antibody — the reason Regeneron is testing a two-antibody combo that binds to the virus in different places to help prevent its escape.Skovronsky said Lilly stuck with one antibody because manufacturing capacity would essentially be cut in half to make two, and “you will have less doses available.” If a single antibody works, “we can treat twice as many people,” he said.— The antibodies might not last long enough. If they fade within a month, it’s still OK for treatment since COVID-19 illness usually resolves in that time. But for prevention, it may not be practical to give infusions more often than every month or two.A San Francisco company, Vir Biotechnology Inc., says it has engineered antibodies to last longer than they usually do to avoid this problem. GlaxoSmithKline has invested 0 million in Vir to test them.Giving a higher dose also may help. If half of antibodies disappear after a month, “if you give twice as much, you will have two months’ protection,” Lilly’s Skovronsky said.— The big fear: Antibodies may do the opposite of what’s hoped and actually enhance the virus’s ability to get into cells or stimulate the immune system in a way that makes people sicker. It’s a theoretical concern that hasn’t been seen in testing so far, but large, definitive experiments are needed to prove safety.“As best as we can tell, the antibodies are helpful,” Lyon said.___Marilynn Marchione can be followed on Twitter: @MMarchioneAP___The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education. The AP is solely responsible for all content. 5919

  濮阳东方妇科医院线上预约   

When it comes to things like the economy or the military, the United States is considered among the strongest countries in the world.But when it comes to education, the U.S. isn’t making the grade, says Dr. Tanji Reed-Marshall with the Education Trust, a Washington D.C.-based group that aims to pinpoint and fix problems and inequities in education.Through nationwide research, Dr. Reed-Marshall found fixing our schools’ funding could be the ticket to better curriculums, improving classroom leadership and creating quality education in America."It's really important for us to understand how we think through where dollars go," says Dr. Reed-Marshall.Dr. Reed-Marshall says the billion in federal funding is not enough and isn’t going to the right places."In this country, zip code still tells the story about what you're likely to receive and the quality of it," says Dr. Reed-Marshall.Teacher Chrystal Miller stresses the notion that all areas aren’t created equal when it comes to getting a piece of the education pie. If she had to give education funding an overall grade, she says it’d be a D or an F.Miller came from a rural public school in Arkansas to the Washington Leadership Academy, a public charter in D.C. She says the difference in zip code is night vs day, and it shouldn’t be that way."Schools and students should be funded based on their need and not necessarily because you're at this zip code or you have this kind of family background or this kind of economic status,” Miller says. According to research by the Education Trust, students who live in lower income areas get about ,800 fewer tax dollars per student.Dr. Reed-Marshall says tax dollars drive education dollars. She believes there needs to be equal distribution of the tax dollars to raise the U.S. to the top of the ranks and in order to create an even and quality playing field, regardless of where students live. 1919

  濮阳东方妇科医院线上预约   

While Election Day is still 19 days away, voters were already forced to make a decision on Thursday: Donald Trump or Joe Biden.While the decision will not show up on an official ballot or election, the choice Americans were forced to make was on which presidential town hall to watch. While having debates on competing networks might have made things challenging for swing voters, there are not many undecided voters left, according to polls. In a national poll released by "The Hill" yesterday, the survey found that 7% of voters remain undecided. On one network, Joe Biden calmy responded to questions from a socially-distanced audience in Pennsylvania. Meanwhile, President Donald Trump sparred with NBC News host Savannah Guthrie in a competing town hall there.The dueling town halls were held in lieu of a traditional town hall debate. The debate was scrapped after the Commission on Presidential Debates said that tonight’s debate would be held virtually. Trump opted out of a virtual debate, prompting Biden to schedule a forum on ABC News. Yesterday, Trump announced he too would hold a network-televised debate, this time on the NBC family of networks.Trump and Biden plan on debating next week in person for the final time. Biden said he would like to see Trump tested for the coronavirus at the next debate.“Yeah," Biden said when asked if Trump should be tested. "By the way, before I came up here, I took another test, I've been taking it every day, the deep test, you know, the one, they go in both [noses]. Because I wanted to be able to — if I had not passed that test, I didn't want to come here and not expose anybody."White House press secretary Kayleigh McEnany originally stated that Trump was tested multiple times a day. But Trump has acknowledged that he wasn’t tested every day, and said during Thursday’s town hall he was unsure when his last negative test was before announced he was infected with the coronavirus on Oct. 2.“I don't know, I don't even remember,” Trump said. “I test all the time. I can tell you this. After the debate, like, I guess, a day or so, I think it was Thursday evening, maybe even late Thursday evening, I tested positive. That's when I first found out,While Biden answered questions on tax policy, Trump responded to a New York Times story on his personal taxes, and was pressed on details that he reportedly owes 0 million in taxes in the coming years. "I'm treated very badly by the IRS,” Trump said. “They treat me very, very badly. You have people in there from previous administrations. They treat me very badly. But we're under audit. It's very routine in many ways. But we're under audit. They like to change the game, change the rules, do everything,"Biden was pushed on whether he would raise taxes amid a pandemic and higher unemployment.“When I said the Trump tax cuts, about .3 trillion of the trillion in his tax cuts went to the top one tenth of 1%,” Biden said. “That’s what I’m talking about eliminating. Not all the tax cuts that are out there.” 3033

  

While active-shooter training is not new to houses of worship, the massacre this month at a Texas church has renewed attention to their vulnerability and the fine line religious leaders walk as they try to create a welcoming atmosphere that doesn't tempt a would-be shooter."One of the responsibilities I have as a pastor, as a shepherd of the church, is to protect the people, and that includes spiritually, but it also includes the physical protection," said Pastor Jack Graham of Prestonwood Baptist Church in Plano, Texas.The deadliest-ever mass shooting in Texas -- in which a gunman walked among pews at First Baptist Church in Sutherland Springs, killing 25 parishioners and an unborn child -- has become the latest in a string of attacks directed at religious institutions. 789

  

While not as many Americans are expected to travel for Thanksgiving as usual, 56% of Americans are intending on traveling according to data from Tripadvisor. Tripadvisor says that this year's figures are down from an estimated 70% of Americans travelling in 2019.Tripadvisor surveyed Americans from October 16 to 20, so it is possible increased travel restrictions associated with a rise in cases could scare off some from traveling by Thanksgiving. Many states are telling travelers to quarantine for two weeks before coming into contact with others. The vast majority of those traveling, 76%, say they will drive to their Thanksgiving destination, compared to just 11% who say they will fly.The survey found that 22% are staying in a hotel or vacation rental to practice social distancing from friends and family."Despite COVID-19 concerns, the majority of Americans are still traveling this Thanksgiving. The way in which consumers travel, however, will look very different from past years," said Christopher Hsi, Consumer Market Research Lead Analyst for Tripadvisor. "This year, we can expect shorter trips with smaller groups of people for more intimate, close knit gatherings. Many are taking day trips (24%) or spending one night at their destination. Americans are also continuing to avoid big cities, instead opting for warm weather and beach destinations in southern states. We do see, however, that Boomers are less likely to travel this year compared to last (29% vs. 51%)."Whether Americans can safely travel for the holidays remains up for debate, as many public health experts warn that informal gatherings have contributed to the spread of the virus, which has been killing roughly 1,000 Americans per day in recent days.“Unfortunately, the COVID-19 epidemic is worsening, and small household gatherings are an important contributor to the rise in COVID-19 cases,” the CDC said.The CDC issued guidance for holiday gatherings. Part of the recommendations say masks should be worn at holiday gatherings involving people who are not from the same household, and that guests stay 6 feet apart. The CDC also advises against handshakes and hugs.One public health expert says following these guidelines is dependent on your risk tolerance.“I am very risk tolerant,” Dr. Amesh A. Adalja, a senior scholar at the Johns Hopkins Center for Health Security, said in August. “I am an infectious disease physician. I have taken care of people with the coronavirus. Both of my parents are physicians. I don’t take any special precautious with my parents. I don’t think they take any special precautious with me.“I think physicians might be risk tolerant, but I have not changed my behaviors with people I see regularly, other than if they’re telling me they have a fever, and then I might say ‘stay away’ because I don’t want to be quarantined and not be able to work.”Adalja agrees, however, that there is a risk in attending family gatherings, and while face coverings are effective, they're not a panacea.If you ask Dr. Christopher Murray, the director of the Institute for Health Metrics and Evaluation at the University of Washington, he is opting not to see extended relatives amid the pandemic.“Personally, in our family, we will not have our family get together,” Murrays said about Thanksgiving. “I am particularly cautious. That would be our strategy. Certainly, we have avoided, on a personal level, we have avoided any indoor exposure to friends or family and have restricted any exposure at all to outdoor interaction where we can maintain 6 feet or more.” 3579

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