郑州郑州晶体植入眼科手术哪个医院好郑州眼睛近视了做什么运动可以改善,郑州儿子的矫正近视,郑州近视眼散光怎么办,郑州开封市眼病医院电话,郑州参军近视做手术得多少钱,郑州眼睛近视手术大概多少钱,郑州4.8的视力算近视吗

As students from across the country prepare to return to classrooms in the middle of a pandemic, a nationwide school nurse shortage has health experts concerned about how well some districts will be able to handle potential outbreaks of COVID-19.Linda Mendonca oversees the National Association of School Nurses. As she thinks about empty classrooms beginning to fill back up with students, she can’t help but be filled with anxiety.“We don’t have a road map for all of this, so when you don’t have a road map, that makes it a little more challenging,” she said.School nurses will be playing a critical role in the reopening of schools. They’re being asked to monitor kids for COVID-19 symptoms and even keep track of absentee rates to spot potential trends. In some cases, school nurses will help local health departments with contact tracing if an outbreak occurs at a school.But a nationwide nurse school nurse shortage puts a lot of that in jeopardy.“In the midst of a pandemic, there should be a nurse in every school, and there’s not,” Mendonca explained.About 25 percent of the nation’s schools will start this year without a school nurse. It’s a startling statistic that has public health officials particularly concerned, in the middle of a pandemic.The average school nurse makes about ,000. There’s also a simple funding problem. School nurses are often the first to get cut when districts need to eliminate positions. The need is so great, that the National Association of School Nurses is advocating for 10,000 new nurses in the next federal stimulus bill.“The school nurse is so important that there needs to be a full-time nurse in school every day at all schools,” said Jenny Gormley, who’s served as a school nurse in Massachusetts for years.Gormley’s hope is that in the face of this pandemic, districts across the country will find ways to support nurses with both PPE and funding.“We all want students back learning, but we want to do it safely,” she added.As parents attempt to send their kids safely back to school, school nurses could be one of the best prescriptions for success. 2114

Attorney General William Barr has authorized federal prosecutors across the U.S. to pursue “substantial allegations” of voting irregularities before the 2020 presidential election is certified, despite little evidence of fraud. Barr’s action Monday comes days after Democrat Joe Biden defeated President Donald Trump and raises the prospect that Trump will use the Justice Department to try to challenge the outcome. It gives prosecutors the ability to go around longstanding Justice Department policy that normally would prohibit such overt actions before the election is formally certified. President Trump has not conceded the election and is instead claiming without evidence that there has been a widespread, multi-state conspiracy by Democrats to skew the vote tally in President-elect Biden’s favor.Several Republicans in charge of elections have faced scorn from their own party. Republican Philadelphia election head Al Schmidt told CBS News he has been receiving death threats after Pennsylvania was called for Biden on Saturday. Meanwhile, two Republican Senators in Georgia, both headed to their own run-off elections in January, released a statement Monday calling for the resignation of the state’s Secretary of State, Brad Raffensperger, who is also a Republican. 1286

As states across the country grapple with an increase in coronavirus cases and a huge demand for tests, many businesses are looking for other ways to get more mileage out of their supply chain.Like with anything else, supply and demand is a constant struggle. In this unprecedented era, the demand for things like coronavirus tests is so large that public health departments don't have a choice but to figure out ways to make our supplies last. Several states are examining pooled testing. California's Public Health Department says it's to "better leverage testing resources."Pooling is something that blood banks have used for decades to keep their blood supply safe. Dr. Claudia Cohn is the Chief Medical Officer of the AABB, formerly known as the American Association of Blood Banks.“If you have 100 people that need to be tested and if you test each of them, you’ll do 100 tests. If you find that your test is sensitive enough that you can pool together 20 samples at the same time, instead of having 100 tests, you can have five pools of 20,” Dr. Cohn said.Now, if one of those five pools is positive, then Dr. Cohn says, "You’ll need to break it out and test each of those separately. So, let’s say you have one positive person in a pool of 100 people, you either do 100 tests and find one positive or you do five pools of 20, four of those pools will be negative, so you’ve done 4 pools and covered 80 people."The test works by taking a tiny sample from each person who was tested.“When you take a swab from everyone’s nose, you isolate the DNA from that swab,” Dr. Cohn said about the PCR test, which is generally a nose swab. “It’s not a lot, it’s a small amount but it’s enough. Because these tests are very, very sensitive.”Those tests are so sensitive, and they have to be, that pooling can really only work if the test can handle, as in detect, multiple samples at once. The FDA mandates that.“The FDA is quite demanding as they should be in terms of making sure tests work well and are safe,” Dr. Cohn said.And Dr. Cohn says, pooling wouldn't work in an area where there's a large outbreak, which means a large number of people would test positive regardless of pooling. In the blood world, this strategy has been perfected.“You are taking 100 samples and taking a drop from each sample and putting it together,” Dr. Cohn said. “You are testing every single person who comes through. In the blood world safety is before everything."Blood banks test for HIV, Hepatitis C and B and well as COVID-19 antibodies, according to the American Red Cross. And, as this pandemic moves through our communities, Dr. Cohn says our blood supply needs to remain strong.“After that initial spike, it went down again and that was okay because elective surgery had been canceled, so the demand for blood had gone down as well so for a while we were at a good balance of demand and supply. But then elective surgeries opened up and hospitals went back to full service and we’re in a shortage again,” Dr. Cohn said. 3017

As the 2020 election approaches, Facebook founder Mark Zuckerberg said the social media networks are giving users an opportunity to limit most political advertisements.The announcement was paired with several measures Zuckerberg said Facebook and Instagram are launching as part of its response to the upcoming election.In order to limit the advertisements on Facebook, go to the Facebook mobile app, click on settings, ad preferences, and ad topics. The video below shows how it works:For Instagram users, click on settings, ads, and ad topic preferences. The video below shows how it works:Zuckerberg said in an op-ed to USA Today, “For those of you who've already made up your minds and just want the election to be over, we hear you — so we're also introducing the ability to turn off seeing political ads. We'll still remind you to vote.” 851

At least 452 people were killed and thousands injured after a powerful earthquake struck near the border of Iran and Iraq late Sunday.The 7.3-magnitude earthquake is the deadliest of the year, eclipsing the one that hit Mexico City in September, and was felt as far away as Turkey and Pakistan. 302