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The top U.S. public health agency stirred confusion by posting — and then taking down — an apparent change in its position on how easily the coronavirus can spread from person to person through the air.But officials at the Centers for Disease Control and Prevention say their position has not really changed and that the post last week on the agency’s website was an error that has been taken down.It was “an honest mistake” that happened when a draft update was posted before going through a full editing and approval process, said Dr. Jay Butler, the CDC’s deputy director for infectious diseases.The post suggested that the agency believes the virus can hang in the air and spread over an extended distance. But the agency continues to believe larger and heavier droplets that come from coughing or sneezing are the primary means of transmission, Butler said.Most CDC guidance about social distancing is built around that idea, saying that about 6 feet is a safe buffer between people who are not wearing masks.In interviews, CDC officials have acknowledged growing evidence that the virus can sometimes be transmitted on even smaller, aerosolized particles or droplets that spread over a wider area. Certain case clusters have been tied to events in which the virus appeared to have spread through the air in, for example, a choir practice. But such incidents did not appear to be common.Public health experts urge people to wear masks, which can stop or reduce contact with both larger droplets and aerosolized particles.But for months, agency officials said little about aerosolized particles. So when the CDC quietly posted an update Friday that discussed the particles in more detail, the agency’s position appeared to have changed. The post said the virus can remain suspended in the air and drift more than 6 feet. It also emphasized the importance of indoor ventilation and seemed to describe the coronavirus as the kind of germ that can spread widely through the air.The post caused widespread discussion in public health circles because of its implications. It could mean, for example, that hospitals might have to place infected people in rooms that are specially designed to prevent air from flowing to other parts of the hospital.But the CDC is not advising any changes in how far people stay away from each other, how they are housed at hospitals or other measures, Butler said.The CDC has come under attack for past revisions of guidance during the pandemic, some of which were driven by political pressure by the Trump administration.Butler said there was no external political pressure behind the change in this instance. “This was an internal issue,. And we’re working hard to address it and make sure it doesn’t happen again,” he said.In a statement released Monday, the CDC said the revisions to the “How COVID-19 Spreads” page happened “without appropriate in-house technical review.”“We are reviewing our process and tightening criteria for review of all guidance and updates before they are posted to the CDC website,” the statement said.At least one expert said the episode could further chip away at public confidence in the CDC.“The consistent inconsistency in this administration’s guidance on COVID-19 has severely compromised the nation’s trust in our public health agencies,” said Dr. Howard Koh, a Harvard University public health professor who was a high-ranking official in the Department of Health and Human Services during the Obama administration.“To rectify the latest challenge, the CDC must acknowledge that growing scientific evidence indicates the importance of airborne transmission through aerosols, making mask wearing even more critical as we head into the difficult fall and winter season,” Koh said in a statement.___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. 3964

The Republican National Committee has withdrawn from a joint fundraising agreement with Roy Moore, according to a Federal Election Commission filing posted Tuesday, as the GOP establishment continues to break ties with the Alabama Senate candidate.The National Republican Senatorial Committee was the first to drop itself from the agreement, which benefits Moore's campaign, ending its participation last Friday, according to FEC filings. 466

The U.S. will finish the month of November with more than 4 million confirmed cases of COVID-19, by far the most it has recorded in any month since the beginning of the pandemic.According to a database kept by Johns Hopkins University, the U.S. recorded 4.3 million new cases of COVID-19 throughout the month of November. That represents more than 30% of the 13.3 million cases recorded throughout the country since the virus reached the U.S. in February.Throughout November, the U.S. set 10 daily records for newly-reported COVID-19 cases. The peak came on Friday, when Johns Hopkins says the U.S. saw more than 205,000 new cases — though those numbers may have been skewed by the Thanksgiving holiday when some local governments chose not to report new info.The mountainous increase in cases has resulted in a frightening increase in hospitalizations and hospital resource use. According to the COVID Tracking Project, a record 93,000 Americans across the country were hospitalized with COVID-19 as of Monday morning, an all-time record. On Oct. 31, that figure stood at just over 47,000. While hospitalizations have spiked across the country, 66% of those hospitalized are in the Midwest and South, meaning many rural hospitals in those regions are at capacity. With hospitals full, doctors and nurses are struggling to treat patients who are suffering from other emergency ailments.Sadly, the number of deaths from COVID-19 has steadily increased throughout the month. As of Monday morning, an average of 1,436 Americans had died of COVID-19 each day for the last week. On Oct. 31, that figure sat at just over 800. Therapeutics and new treatments for the virus have caused the death rate to fall since the springtime when nearly 2,500 Americans were dying every day. But despite the improvements in treatments, the U.S. continues to lose about as many Americans every two days that were lost in the Sept. 11, 2001 terror attacks.And while several companies have reported encouraging news regarding potential vaccines in recent weeks, health experts warn the pandemic will get much worse before they are widely available.Prior to Thanksgiving, Dr. Anthony Fauci — America's top infectious disease expert — warned that the holiday could cause the rate of transmission to rise exponentially, given that some celebrations included large indoor gatherings."The chances are that you will see a surge superimposed on a surge," Fauci said. 2450

The Tuesday after Thanksgiving may be known as Travel Deal Tuesday, a day offering deals on airfare. But Cyber Monday is the day to book your dream vacation.  If you’re looking to take a family vacation, you may want to look at Universal Studios and Universal Island Treasure in Orlando.On undercovertourist.com, you can get two-day park tickets, plus two extra days free, if you buy today. That’s a total of 3 for four people for four full days. If you want another option for warm weather, you could travel to Miami and take an all-inclusive three-day Royal Caribbean cruise to the Bahamas. If you buy one full-price ticket, you’ll get your second one 60 percent off. The third and fourth ticket will be 30 percent off!The total cost for a family of four will cost 5. The deal can be found on americandiscountcruises.com.Have you always wanted to go to the Grand Canyon? If you take the Grand Canyon train tour, you can save 50 percent on your once in a lifetime trip.Thetrain.com is offering a three-day, two-night stay in Williams, Arizona for 5 for two people. That's a 0 savings.If the west coast is more your style, a family of four can head to LEGO Land for a crazy good deal. LEGO is offering 30 percent off rooms and 50 off two-day LEGO Land tickets on their website. You can get all of that for 1 per person for a two-day stay. 1381

The US asked China to close Consulate General in Houston in 72 hours. This is a crazy move.— Hu Xijin 胡锡进 (@HuXijin_GT) July 22, 2020 141

来源：资阳报