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Top health officials are considering “pooled testing” as a way to ramp up COVID-19 tests.Here's how it works:Instead of testing each sample individually, labs pool together a certain amount, like 10, in one tube with one test.If it's negative, you double check it, and then you're done.If there's a positive, you break it down either into smaller pools or individually for further testing.“So, there are advantages, mostly cost savings, that's the huge advantage of pooling, also the ability to go through a very large volume of specimens,” said Dr. Thomas Quinn, an infectious disease researcher at National Institute of Allergy and Infectious DiseasesQuinn worked in one of many labs that used the pooling technique during the HIV epidemic in the 1980s. He says the difference between then and now is the tests themselves.Pooling dilutes the samples. The HIV tests were very accurate, so that wasn't an issue, but with COVID-19, the tests aren't as reliable.The other problem is pooling takes more time in the lab, even with robotic equipment helping.“We need to get everyone tested and everyone wants to know what's the result of my test within 24 hours. That's very hard to do with pooling,” said Quinn.Quinn isn't recommending pooling for individual testing right now. He says it could be more useful in big surveys, when it's not an emergency. 1357

This year has been a little … off. The coronavirus pandemic forced the lockdown of schools and businesses earlier this year and canceled many summer vacations. Dunkin’ Donuts is now saying they are ready for fall. Now, in August.The coffee and donut chain announced this week they will be serving up their pumpkin flavored beverages, bakery treats and more starting on August 19. This is the earliest they have offered the fall-themed items.“This is one of the most anticipated times of the year for Dunkin’ guests, and we’re excited to make pumpkin favorites available at Dunkin’ restaurants earlier than ever,” said Jill Nelson, Vice President, Marketing Strategy at Dunkin’ in a statement from the company.Dunkin’ has a range of pumpkin and spice flavored items to get customers into the fall mood. Enjoy a pumpkin spice latte or pumpkin flavoring swirled into any beverage, chai tea latte, apple cider donut, pumpkin donut or maple sugar bacon breakfast sandwich.The fall menu items will be available August 19 for a limited time. 1042

TIJUANA, Mexico (AP) — More buses of exhausted people in a caravan of Central American asylum seekers reached the U.S. border Thursday as the city of Tijuana converted a municipal gymnasium into a temporary shelter and the migrants came to grips with the reality that they will be on the Mexican side of the frontier for an extended stay.With U.S. border inspectors at the main crossing into San Diego processing only about 100 asylum claims a day, it could take weeks if not months to process the thousands in the caravan that departed from San Pedro Sula, Honduras, more than a month ago.Tijuana's robust network of shelters was already stretched to the limit, having squeezed in double their capacity or more as families slept on the floor on mats, forcing the city to open the gymnasium for up to 360 people on Wednesday. A gated outdoor courtyard can accommodate hundreds more.The city's thriving factories are always looking for workers, and several thousand Haitian migrants who were turned away at the U.S. border have found jobs and settled here in the last two years, but the prospect of thousands more destitute Central Americans has posed new challenges.Delia Avila, director of Tijuana's family services department, who is helping spearhead the city's response, said migrants who can arrange legal status in Mexico are welcome to stay."Tijuana is a land of migrants. Tijuana is a land that has known what it is to embrace thousands of co-nationals and also people from other countries," Avila said.Mexican law enforcement was out in force in a city that is suffering an all-time-high homicide rate. A group of about 50 migrants, mostly women and children, walked through downtown streets Thursday from the city shelter to a breakfast hall under police escort.As buses from western and central Mexico trickled in overnight and into the morning, families camped inside the bus terminal and waited for word on where they could find a safe place to sleep. One shelter designed for 45 women and children was housing 100; another designed for 100 had nearly 200.Many endured the evening chill to sleep at an oceanfront park with a view of San Diego office towers and heavily armed U.S. Border Patrol agents on the other side of a steel-bollard fence.Oscar Zapata, 31, reached the Tijuana bus station at 2 a.m. from Guadalajara with his wife and their three children, ages 4, 5 and 12, and headed to the breakfast hall, where migrants were served free beef and potatoes.Back home in La Ceiba, Honduras, he had been selling pirated CDs and DVDs in the street when two gangs demanded "protection" money; he had already seen a colleague gunned down on a street corner because he couldn't pay. He said gangs called him and his wife on their cellphones and showed up at their house, threatening to kidnap his daughter and force her into prostitution if he didn't pay.When he heard about the caravan on the TV news last month, he didn't think twice."It was the opportunity to get out," Zapata said, waiting in line for breakfast.Zapata said he hopes to join a brother in Los Angeles but has not yet decided on his next move. Like many others, he planned to wait in Tijuana for others in the caravan to arrive and gather more information before seeking asylum in the United States.Byron Jose Blandino, a 27-year-old bricklayer from Nicaragua who slept in the converted gymnasium, said he wanted to request asylum but not until he could speak with someone well-versed in U.S. law and asylum procedures."The first thing is to wait," Blandino said. "I do not want to break the laws of any country. If I could enter in a peaceful manner, that would be good.To claim asylum in San Diego, migrants enter their names in a tattered notebook held together by duct tape and managed by the migrants in a plaza outside the entry to the main border crossing.On Thursday, migrants who registered six weeks ago were getting their names called. The waiting list has grown to more than 3,000 names and stands to become much longer with the caravans.Tijuana officials said there were about 800 migrants from the caravan in the city Wednesday. The latest arrivals appeared to push the total above 1,000.The migrants have met some resistance from local residents, about 100 of whom confronted a similar-size group of Central Americans who were camped out by the U.S. border fence Wednesday night."You're not welcome" and "Get out!" the locals said, marching up to the group.Police kept the two sides apart.Vladimir Cruz, a migrant from El Salvador, shook his head and said: "These people are the racists, because 95 percent of people here support us.""It is just this little group. ... They are uncomfortable because we're here," Cruz said.Playas de Tijuana, as the area is known, is an upper-middle-class enclave, and residents appeared worried about crime and sanitation. One protester shouted, "This isn't about discrimination, it is about safety!"There are real questions about how the city of more than 1.6 million will manage to handle the migrant caravans working their way through Mexico, which may total 10,000 people in all."No city in the world is prepared to receive this number of migrants," said Tijuana social development director Mario Osuna, adding that the city hopes Mexico's federal government "will start legalizing these people immediately" so they can get jobs and earn a living.Dozens of gay and transgender migrants in the caravan were already lining up Thursday to submit asylum claims, though it was unclear how soon they would be able to do so.The caravan has fragmented somewhat in recent days in a final push to the border, with some migrants moving rapidly in buses and others falling behind.On Thursday, hundreds were stranded for most of the day at a gas station in Navojoa, some 750 miles (1,200 kilometers) from Tijuana."We were dropped here at midnight ... in the middle of nowhere, where supposedly some buses were going to come pick us up, but nothing," Alejandra Grisel Rodriguez of Honduras told The Associated Press by phone. "We are without water, without food."After about 12 hours seven buses began arriving to collect the migrants, Rodriguez said, but they quickly filled up."We would need at least 40 or 50," she said.Jesus Edmundo Valdez, coordinator of firefighters and civil defense in Navojoa, said Wednesday that authorities were providing food, water and medical attention to migrants there. His phone rang unanswered Thursday.Mexico has offered refuge, asylum and work visas to the migrants, and its government said this week that 2,697 temporary visas had been issued to individuals and families to cover them during the 45-day application process for more permanent status. Some 533 migrants had requested a voluntary return to their countries, the government said.___Associated Press writer Maria Verza contributed from Culiacan, Mexico. 6880

Three days after Hurricane Michael unleashed its wrath in the Florida Panhandle, residents in some of the hardest hit areas are growing desperate for food and water.Long lines have formed outside fire stations, schools and Salvation Army food trucks as residents try to secure anything from bottled water and ready-to-eat meals to hot meals.PHOTOS: Hurricane Michael damageFlorida Governor Rick Scott tweeted on Saturday that millions of meals and gallons of water are already on the way to the impacted communities.The death toll from Michael has risen to at least 17 and nearly 900,000 customers remain without power in seven states. The storm that smacked Florida's Panhandle was one of the most powerful hurricanes to hit the United States, leaving a trail of destruction stretching as far as Virginia. The misery from its impact will likely linger for weeks or even months.On Saturday, emergency crews will continue descending into the coastal cities in the Panhandle, like Mexico Beach, that were wiped out and will try to reach remote areas that were isolated by downed trees and power poles. 1107

There’s a new way to take an Uber and as long as you don’t mind a little walking it’s the cheapest option.Express Pool is the latest option for taking an Uber. Once you plug in your location, the new option will pop up on the bottom far left of your screen.A quick trial test of Express Pool found the service to be a dollar cheaper than Uber Pool. However, you'll have to walk a block or two to be picked up by your driver.The logic behind the new service is to help Uber drivers be able to drive in a straight line to pick up pool passengers. That way, there are no out-of-the-way stops.However, it could mean for a slower pickup time. Also, with any Pool ride from Uber, you will most likely share the ride with other riders.Despite walking out of the way and waiting a bit longer, a test of Express Pool still got riders to their destinations on time.  894

来源：资阳报