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中山大便出血鲜红色是什么原因
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钱江晚报

发布时间: 2025-06-01 12:34:00北京青年报社官方账号
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  中山大便出血鲜红色是什么原因   

The day after President Donald Trump signed a historic peace agreement with world leaders and attended a town hall event in Philadelphia, there are reports White House staff members may have tested positive for COVID-19.During his White House briefing on Wednesday, President Donald Trump confirmed that one person, who is part of the WH staff, tested positive for the coronavirus.A reporter for Globo, a Brazillian media outlet, who is part of the White House press corps tweeted Wednesday morning that she learned of the positive cases when the corps own testing was late. 582

  中山大便出血鲜红色是什么原因   

The good news is Americans are getting COVID-19 test results back, on average, a day faster than they were over the summer. The troubling news, according to experts, is that it is still taking three days on average for Americans to find out their COVID-19 status and this is not quick enough to help with contact tracing and quarantine efforts to slow the spread.Researchers from several universities, including Harvard, Northeastern, Northwestern and Rutgers universities, have been collecting data and conducting surveys for months since the beginning of the coronavirus pandemic.“Prompt test results constitute the foundation of a successful COVID-19 containment strategy,” researchers state at the beginning of their paper.Data now shows, of the participants who got a test for the coronavirus in late September, the average wait time was 2.7 days.In early August, the group announced their survey data showed the average wait time nationwide was 4.1 days. More than 30 percent of participants reported, at the time, they didn’t get test results back until four days or longer.The percentage of people getting results within 24 hours is also increasing; the September survey showed 37 percent of people getting results back in one day, compared to 23 percent over the summer.“Rapid turnaround of testing for COVID-19 infection is essential to containing the pandemic. Ideally, test results would be available the same day. Our findings indicate that the United States is not currently performing testing with nearly enough speed,” researchers said.Disparities still exist for Americans who are Black or Hispanic. Although wait times are shorter for these groups as well compared to summer numbers, they are still, on average, a day or more longer than white test takers.In the latest survey, Black Americans reported waiting an average of 4.4 days for results, and Hispanics reported waiting 4.1 days. By comparison, white and Asian Americans reported wait times of 3.5 and 3.6 days on average, respectively.Also troubling for trying to control the spread of the coronavirus, the data shows how many of those who tested positive had some sort of conversation about contact tracing.“Only 56% of respondents who received a positive COVID-19 test say that they were contacted for the purpose of contact tracing,” the survey found.The survey talked to more than 52,000 people across all 50 states and the District of Columbia. 2434

  中山大便出血鲜红色是什么原因   

The cost of the Justice Department's ongoing investigation into Russia's interference in the 2016 election is now roughly million, according to a new report filed Friday by the special counsel's office.Friday's accounting provided the latest figures covering only the period for April 2018 through September 2018, with special counsel Robert Mueller listing direct expenditures of nearly .6 million.Another roughly .9 million was reported as costs for the work of other Justice and FBI officials who have assisted the investigation but are not under Mueller's direct control. According to the report, those investigation costs would have been incurred "irrespective of the existence of the (special counsel's office)."The department previously reported .7 million in direct and indirect costs from May through September 2017, and  million from October 2017 through March 2018 -- bringing the total from all three reports over the life of the investigation to just over million. Of that amount, only .3 million is the special counsel's direct expenditures.Since taking control of the Russia probe in May 2017, Mueller has advanced on multiple fronts to investigate any links between the Russian government and the Trump campaign, along with other crimes arising from the investigation.To date, the investigation has yielded charges against 36 people or entities. Seven people have pleaded guilty to various charges, including President Donald Trump's first national security adviser, Michael Flynn, former campaign chairman Paul Manafort, former deputy campaign chairman Rick Gates and former campaign foreign policy adviser George Papadopoulos.Meanwhile, Trump and his allies have relentlessly attacked Mueller and the probe as a waste of money.Trump took aim at the cost of the investigation last month, offering a grab-bag of different numbers Mueller had allegedly spent, untethered to the facts.On November 27, 2018 he tweeted: "now ,000,000 Witch Hunt continues and they've got nothing but ruined lives."Then 48 hours later, he tweeted criticizing the "witch hunt" for "wasting more than ,000,000." 2182

  

The CDC is changing their recommendations for travelers, urging them to pay attention to local and state recommendations, and dropping their 14-day quarantine for international or out-of-state travelers.The Centers for Disease Control and Prevention updated their travel requirements Friday, according to multiple media reports. They now advise travelers to "follow state, territorial, tribal and local recommendations or requirements after travel." Previously, the agency recommended a 14-day quarantine for those returning from international destinations or any area with a high concentration of coronavirus cases.The guidelines still urge travelers to limit their risk of infecting others by social distancing and wearing a mask. “You may feel well and not have any symptoms, but you can still spread COVID-19 to others," the CDC states on their website.There are still international travelers who are not allowed to enter the U.S. based on presidential proclamations. Foreign nationals who have spent time in these countries in the last 14 days before travel cannot enter the U.S.: China, Iran, United Kingdom, Ireland, Brazil, and most of Europe. U.S. citizens who travel to these countries can return to the U.S. through 15 airports according to the CDC. 1268

  

The Geminid meteor shower peaks this week, so hope for clear skies that will let you see a beautiful show of green fireballs on Thursday and Friday. This will be the last -- and strongest -- meteor shower of the year, according to NASA.This phenomenon was first recorded in 1862 and causes a show each December.In the hours before sunrise Friday, the most meteors will be visible in the North American sky, peaking about 7:30 a.m. ET, predicts Sky & Telescope. To see when they will peak in your part of the world, check here.But the morning isn't your only chance. On Thursday and Friday, keep an eye on the sky a few hours after sunset -- just keep the moon at your back.Although the Geminid shower is known for its "shooting stars," the number of meteors visible depends on the time and how dark it is. There will be fewer of them earlier in the evening, but the shower should hit a maximum of about 100 per hour around 2 a.m., NASA said. For those in the suburbs, expect about 30 to 40 per hour. And if you're in a city like New York, San Francisco or Atlanta, you probably won't see anything.Early evening meteors may be longer, with dramatic streaks that last several seconds. Later on, the meteors will present quicker streaks or leave trails of smoke that appear to glow.The asteroid 3200 Phaethon is responsible for this meteor shower, which is unusual because comets usually create meteor showers with icy debris. Scientists have debated the very nature of what Phaethon is. The closely tracked near-Earth asteroid has been likened to comets, so it's been called a "rock comet."Phaethon was discovered in October 1983 and named after the Greek myth about the son of Helios, the sun god, because it closely approaches our sun.Phaethon orbits the sun closer than any other asteroid and takes 1.4 years to orbit it. The asteroid heats to about 1,300 degrees Fahrenheit on closest approach to the sun, which causes it to shed dusty debris.These particles cause the meteor shower when they plunge into Earth's atmosphere at 22 miles per second, vaporizing in the streaks we call "shooting stars."If you live in an urban area, you may want to drive to a place that isn't littered with city lights that will obstruct your view. If you're able to find an area unaffected by light pollution, meteors could be visible every couple of minutes from 10 p.m. until dawn.Find an open area with a wide view of the sky, and don't forget to bundle up. Make sure you have a chair or blanket so you can look straight up. And give your eyes about 20 to 30 minutes to adjust to the darkness -- without looking at your phone -- so meteors are easier to spot.While you're keeping an eye out for the meteor shower, you might see a small, foggy green patch in the sky, NASA said. That will be Comet 46P/Wirtanen, which is making its closest approach to Earth -- within 7 million miles -- for the next 20 years. And it will be visible to the naked eye. The comet is expected to come closest to Earth and peak Sunday. 3007

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