上海市中医门诊部石门一路预约(上海结节4.1) (今日更新中)

The first snowflakes flew into the lower 48 this week.A big winter storm blew through the higher elevations of western Montana and northern Idaho earlier this week, and now, a few of those snowflakes may fall in parts of western Wyoming and in the mountains of Utah and Colorado. 287

The coronavirus pandemic may have started earlier than previously thought, according to scientists from the CDC.A study from government scientists published November 30 appears to confirm what some health experts have suggested, patients infected with COVID-19 were in the US before the beginning of 2020.“The findings of this report suggest that SARS-CoV-2 infections may have been present in the U.S. in December 2019, earlier than previously recognized. These findings also highlight the value of blood donations as a source for conducting SARS-CoV-2 surveillance studies,” the report states.The first officially documented case of COVID-19 in the US was reported on January 19, a person who had returned to the US after traveling from China.The World Health Organization was alerted to the novel coronavirus by officials in Wuhan, China on December 31, 2019. The CDC researchers say further reports have identified a patient in Wuhan with COVID-19 symptoms as early as December 1, 2019.The study looked at more than 7,000 routine blood donation samples taken by the American Red Cross from people in nine states between December 13, 2019 and January 17, 2020.They found COVID-19 antibodies in 106 samples, mostly from the states of California, Oregon and Washington, from blood collected between December 13-16, 2019. Other samples that indicated COVID-19 antibodies were from Connecticut, Iowa, Massachusetts, Michigan, Rhode Island, and Wisconsin taken in early January 2020.“The presence of these serum antibodies indicate that isolated SARS-CoV-2 infections may have occurred in the western portion of the United States earlier than previously recognized or that a small portion of the population may have pre-existing antibodies that bind SARS-CoV-2,” the report states.Scientists acknowledge that patients presenting with what is now known as COVID-19 symptoms before mid-January would likely not have had clinical samples taken or kept because of how new the virus was. Therefore, the CDC used the existing repository collected by the American Red Cross during their routine blood donation process.“These specimens were previously archived for potential future studies to identify emerging transfusion-transmissible infections but were re-purposed for the present study,” researchers stated.Researchers caution that these results are subject to limitations. Although they detected antibodies, that does not mean they are “true positive” COVID-19 tests. In order to get a true positive, a different test would need to be a run. 2545

The FDA has given the final go-ahead to Pfizer-BioNTech's coronavirus vaccine.Shots will begin in a few days after the decision, but initial doses will be scare and rationed to health workers and nursing home residents and staff first. Enough vaccinations for the general population isn't expected until spring, prompting experts to urge the public to continue using face coverings and physically distance through the winter.Authorization had been expected Saturday morning, after an advisory panel recommended approval of the vaccine Thursday evening. According to reports, the agency was working to move it up to Friday evening.Friday morning, President Donald Trump lashed out at the Food and Drug Administration and its commissioner, Dr. Stephen Hahn, for not moving faster. Trump tweeted the FDA “is still a big, old, slow turtle. Get the dam vaccines out NOW, Dr. Hahn @SteveFDA. Stop playing games and start saving lives!!!” 939

The coronavirus has had a significant impact on sports, and now football is beginning to see the virus affect the sport.NFL Network reports that the league and players’ union agreed to not hold a preseason this fall, which would have gotten underway next month. Given football’s schedule, the games provide teams with revenue as they’re generally included in season ticket packages. The decision comes with the likelihood of teams playing in front of no or a limited number of fans during the regular season. Several states have said that large gatherings will be limited into the fall.NFL Network added the league will expand training camp rosters, and there will be an opt-out for players at a “high risk” of having coronavirus complications. 752

The devastation left by Hurricane Michael in several states is still coming into focus, with coastal Florida cities destroyed beyond recognition, and homes, businesses and agriculture torn or swamped from Georgia to Virginia.More than 1 million customers were left without electricity, and emergency officials have no access to many towns. The US death toll has risen to at least 17 -- including five in Virginia and eight in Florida -- and it's expected to climb."I expect the fatality count to rise today and tomorrow as we get through the debris," Federal Emergency Management Agency Administrator Brock Long said Friday morning.Michael, which smacked Florida's Panhandle as one of the most powerful hurricanes to hit the United States, left Virginia's coast as a post-tropical low early Friday -- and its trail of destruction will take weeks to take into account.Aerial footage shows coastal cities in the Panhandle, like Mexico Beach, wiped out. Search teams used dogs as they combed the area for people killed or trapped in debris.One death was reported in Mexico Beach -- that of an elderly man found alone, Mayor Al Cathey said.City manager Tanya Castro said Mexico Beach won't be up and running for 12-18 months and advised people who evacuated not to return.Dawn Vickers rode out the storm in Mexico Beach, but her house and vehicles were demolished. Without cell phone service or transportation, she has been taking shelter in one of the few condos left standing, invited by someone she met at what's left of a gas station."This has been the worst nightmare I've ever been through in my life," she told CNN on Friday.A psychiatric hospital in Florida is isolated after downed trees blocked roads around Chattahoochee, and a tree caused a water line to break. The facility is running on power generators, and helicopters have delivered food and water, the state's Department of Children and Families said. 1938

来源：资阳报