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To end the pandemic, there need to be enough people immune to COVID-19 and there are two ways to do that: immunity through infection or from a vaccine."I think racing to herd immunity is the dangerous thing that I’m concerned about," said Dr. Stuart Ray, a professor of medicine at Johns Hopkins University School of Medicine.Herd immunity is when the spread of the infection cannot be sustained because the number of people who are immune is high enough. Some countries are considering it as a strategy to combat COVID-19.But Ray said it could not work in the US unless much more effective treatments are developed.He says on average, a newly infected person infects two others, so to have herd immunity from COVID-19 about 60 percent of people would have to become immune."We would have something like another 100 million people, maybe more, infected. 150 million more and even if the major complication rate is a fraction of 1 percent, we will still have huge numbers of deaths," said Ray.He said we also don’t know if just having had the infection once will create lasting immunity to control the spread."It possible that you could be immune enough not to get sick and still not immune enough to prevent that spread and so herd immunity is a tough bar for us to aim for because not only do we need 60 percent of people to be immune but we need them to be immune in a way that prevents them from infecting other people," said Ray.The other way to achieve herd immunity would be through a vaccine."Vaccines can work better, provide better immunity than the natural infection does. The new shingles vaccine provides great immunity and protects more than 95 percent of people from getting shingles," said Ray.Several vaccines are still going through the last phase of clinical trials to see if any also creates enough immunity to prevent passing the virus along.This story was first reported by Abby Isaacs at WMAR in Baltimore, Maryland. 1946

Three people were killed and five others wounded Friday in southern France after a gunman stole a car, fired at police officers and took hostages in a supermarket in what French authorities are treating as a terror attack.One person died in the carjacking, and two others were killed at the market, the French Interior Ministry said.Police shot dead the gunman, French media reported, after a four-hour standoff at the Super U supermarket in the town of Trèbes. 469

There was a simple explanation in October 2017 when a Department of Homeland Security official was asked why a memo justifying ending immigrant protections for Central Americans made conditions in those countries sound so bad."The basic problem is that it IS bad there," the official wrote.Nevertheless, he agreed to go back and see what he could do to better bolster the administration's decision to end the protections regardless.The revelation comes in a collection of internal emails and documents made public Friday as part of an ongoing lawsuit over the decision to end temporary protected status for hundreds of thousands of immigrants who live in the US, most of whom have been here for well over a decade.Friday's document dump come as backup for the attorneys' request that the judge immediately block the government's decision to end these protections as the case is fully heard. A hearing is scheduled for late September.In the emails, Trump administration political officials repeatedly pushed for the termination of TPS for vulnerable countries, even as they faced pushback from internal assessments by career staffers and other parts of the administration.In one exchange, the now-director of US Citizenship and Immigration Services, Francis Cissna, remarks that a document recommending that TPS for Sudan be terminated reads like it was going to recommend the opposite until someone was "clubbed ... over the head." 1439

TIJUANA, Mexico (KGTV) - A witness to a crash on the Tijuana side of the U.S.-Mexico border is describing the chaos as a truck plowed into vehicles and vendors. “I heard boom, boom, boom,” said the witness, who wishes to remain anonymous. He had just finished visiting his mother in Mexico and was waiting in traffic at the San Ysidro Port of Entry to return to the United States when he saw the black truck coming up behind him. The truck driver hit three vehicles and stopped, the witness said. Other witnesses surrounded the black truck and popped the tires, the witness told 10News. “His wife turned to him and said ‘Go, go, go,'” the driver said. RELATED: Report: Truck with Utah plates strikes vendors, other cars at U.S.-Mexico borderThe truck driver then hit vendors selling food in between lanes of traffic, the witness said. People who appeared to be homeless stopped to grab food that was scattered on the ground after the crash. The witness pulled over to help a woman who was struck by a taco cart, but he slipped in salsa and was injured. He saw a man grabbing a peso bill from his front seat and returned to his vehicle. Mexican police and firefighters closed down traffic for about 20 minutes. When the situation was cleared, northbound traffic into the U.S. was consolidated into two lanes, the witness said. 1333

This is completely unacceptable, disappointing, and appalling.The DNC shared the procedural purpose of my remarks to media WELL in advance. @NBC knew what was going to happen & that it was routine.How does a headline that malicious & misleading happen w/ that prior knowledge?— Alexandria Ocasio-Cortez (@AOC) August 19, 2020 341