临沧妇科怎么检查宫颈(临沧用早孕试纸测出两天线说明怀孕多久) (今日更新中)

The excitement of two COVID-19 vaccines with more than 90 percent efficacy is undeniable.In November, both Pfizer and Moderna announced its scientists had developed vaccines with efficacy at or near 95 percent, but scientists are warning these vaccines are not the "silver bullet" to ending the pandemic.“We don’t want to give the public the impression that there’s an emergency use authorization and these vaccines become available in a small amount in December and we can go back to our pre-pandemic behavior,” said William Moss, executive director of the International Vaccine Access Center at Johns Hopkins.In June, the FDA released its vaccine guidelines, saying it would consider emergency use authorization for any vaccine testing with at least 50 percent effectiveness, so there is a reason for celebration, according to Moss, but only after certain questions about the vaccine are answered.Dr. Anthony Fauci has said the initial vaccines will prevent symptoms in those who become infected, rather than kill the virus itself. Moss says that means immunized people might be able to spread COVID-19 to others.He also wonders how long immunization will last. One year? Three years? Will booster doses be needed? They're all careful considerations that will only emerge once one is put into play, according to Moss.“It’s obviously tragic that the [COVID] cases are occurring that quickly, but it does help a vaccine trial because otherwise you just have to wait that much longer for samples to come in,” said Moss.The vaccine process has innovated how scientists and researchers approach these types of situations, however, according to Moss.In traditional vaccines, a small dose of the virus is injected into the body so the immune system can create antibodies. In the COVID-19 vaccine, though, both Moderna and Pfizer have used what is called messenger RNA (mRNA) where the virus’ genetic code is injected into the body so it can instruct cells on what antibodies to produce. Scientists say this way is faster, safer, and can create a stronger immune response as people are not exposed to the virus.“I suspect that if this all goes well and these vaccines are safe and continue to demonstrate 90 to 95 percent efficacy, we’re going to see other vaccines of a similar type,” said Moss. 2298

The Centers for Disease Control and Prevention is asking people who take a COVID-19 vaccine to download a smartphone app so it can continue to track side effects.The app, called V-Safe, uses text messages and web surveys from the CDC to check in with patients who have gotten a COVID-19 vaccine.The app will also remind patients when it's time to go back for a second shot.Patients can expect to experience mild symptoms like fever, headache and muscle aches after taking the vaccine. But doctors, like Dr. Grace Lee — the associate chief medical officer for practice innovation at Stanford Children's Health and a member of the CDC's vaccine advisory panel — say those side effects don't tend to last very long."We hope that patients will be willing to engage in the system, recognizing it does take some time," Lee said. "But it's really important for all of us in the U.S. to make sure that we are helping to create a robust vaccine safety monitoring system for all COVID vaccines."Lee says that because clinical trials for COVID-19 vaccines have been so large — with 30,000 to 60,000 people in each trial, compared to just several thousand for a typical trial — there's already a lot known about the vaccines.The trials have shown no major safety risks thus far, but Lee says rare adverse events can happen — like the two healthcare workers in Alaska earlier this week who suffered anaphylactic allergic reactions with the Pfizer vaccine. The side effects reported by those two patients were similar to the ones suffered by two people in the U.K. earlier this month.Lee says that's why the CDC is counting on as many people as possible to use V-Safe."My hope is that if the numbers are high," Lee said. "It just means it gives us more information more quickly, and so for anything rare that might occur, we would be able to pick it up much more quickly."V-Safe send text messages to patients, asking them how they are feeling for up to six weeks after their shots. The CDC says the questions take less than five minutes to answer and that the information patients provide will be confidential and private. 2117

The ceasefire between the United States and China has set off a huge celebration on Wall Street.The Dow soared about 400 points at Monday's opening bell after China and the United States reached a temporary trade truce. It's a big relief because the damaging trade war between the world's two largest economies was set to deepen in January.The Nasdaq and the S&P 500 climbed more than 1% apiece."A truce is definitely better than an escalation of hostilities," Kit Juckes, strategist at Societe Generale, wrote to clients on Monday.Juckes said that even though investors may doubt the substance of the US-China agreement, "this morning's response reflects relief and a desire to pick up some last-ditch bargains."The relief rally comes after the S&P 500 spiked nearly 5% last week, its best since December 2011. That rebound was triggered by hopes of progress on the trade front and a speech by Federal Reserve chief Jerome Powell that investors interpreted as a signal the central bank will not rush to raise interest rates."The China trade situation is the keystone in the arch of agita," said Sam Stovall, chief investment strategist at CFRA Research.The progress on talks with China means "now we have a very good chance of experiencing a Santa Claus rally," said Sam Stovall, chief investment strategist at CFRA Research.It wasn't just US markets celebrating. Major indexes in Hong Kong and Shanghai surged more than 2.5%. And markets in London, Frankfurt and Paris climbed 2%. Commodities also raced higher. Copper and soybeans rallied. US oil prices, boosted by hopes of an agreement by Russia and Saudi Arabia to cut output, surged 4%.After meeting on Saturday, US President Donald Trump and Chinese President Xi Jinping agreed to hold their fire on tariffs while they try to reach a trade deal. Trump agreed not to raise the 10% tariffs on 0 billion worth of Chinese goods for now. Those tariffs had been scheduled to automatically rise to 25% on January 1. And China said it would be willing to purchase a "very substantial" amount of agriculture, energy and other US products.Still, some analysts warned that the celebration on Wall Street could be short-lived. China and the United States now only have 90 days to sort out nagging trade issues that have been in contention for years, if not decades. And the statements that emerged from the trade meeting lacked concrete details."The beefiest part of Saturday evening's meeting between Presidents Trump and Xi may well have been the local sirloin served for dinner," Nicholas Colas, co-founder of DataTrek Research, wrote to clients on Monday.Goldman Sachs economists said the most likely outcomes are that the truce gets extended after 90 days or that the trade war escalates. The investment bank sees just a 20% chance over the next three months of a comprehensive deal rolling back tariffs."The specter of higher and broader US tariffs remains," Goldman Sachs chief US political economist Alec Phillips wrote to clients on Sunday. 3014

The final countdown is on and everything has been meticulously planned down to the final detail.But there is one wild card that even the Queen herself cannot control: What will the weather be for Prince Harry and Meghan Markle's big day on Saturday, May 19?Since we are still 10 days out, it's still too early to make a definitive call on rain or give detailed predictions about the timing of any potential showers -- but we can look at the long-range weather models and get an idea of what the general weather pattern will be while the world's eyes are on England.May's weather is off to a perfect start, with clear skies and well-above average temperatures in London nearing 30? C (86? F), which has locals feeling the royal wedding fever.The average high temperature for May in London is 18? C (64? F), so this past week has felt downright summer-like.A change in the weather threatens to dampen spirits, however, with cooler temperatures and several bouts of rain moving through in the next week as we lead up to wedding weekend.Temperatures will plummet to below average with significantly more clouds and some rain in the forecast as a couple of low pressure systems move through the British Isles next week.Fortunately, the weekend looks like it could see a return of the milder air and potentially clearer skies as high pressure builds over the North Sea.According to the UK Met Office, the nation's weather forecasting service, "there is low confidence in the forecast for the rest of next week and the following weekend, but there are some signals that it may turn drier, more settled and somewhat warmer with light winds."The forecast for the day can, and likely will, change over the next week and a half. Weather forecasts more than a week out have considerably less skill than short-term forecasts of just a couple of days.Especially when dealing with a region that has rapidly changing weather conditions like Great Britain.A dry wedding day would fit in line with other recent royal nuptials, including those of Prince William and Catherine Middleton in April of 2011 and Prince Charles and Diana's in July, 1981, both of which avoided the damp and rainy conditions many associate with British weather. 2226

The gluttony known as the Nathan’s Famous Hot Dog Eating Contest will go on this Saturday, but like many events being held this year, will not feature a live audience.While the event will be held at a private location in NYC, it’s unclear if all of the competitors will be able to make it.Last week, New York began requiring visitors from states with large numbers of COVID-19 cases to self-quarantine for 14 days.For perennial champion Joey Chestnut, he was fortunate to arrive in NYC in time not to be required to quarantine. Chestnut is coming into the 2020 competition after consuming 71 hot dogs in 10 minutes during the 2019 event. His 2019 performance was just shy of his record of 74 hot dogs set in 2018.“I arrived to NYC early because of risk of visitors to NY needing quarantine, my last practices were scrapped. Staying positive and focused on the 4th,” Chestnut said.The competition will air live on ESPN starting at noon on Saturday.“We’re ecstatic to make the announcement that the Hot Dog-Eating Contest will take place this year,” states James Walker, Nathan’s Famous Senior Vice President, Restaurants. “2020 has been a year for the history books, and the realization that this storied July 4th tradition would be able to occur, is a great feeling. With that being said, our country and our world has endured so much in the last couple of months, that we’d be remiss if we didn’t use this moment to honor those that have done so much for each of us during this time.” 1493

来源：资阳报