Coronavirus Testing, TikTok, Beyoncé View in browser | nytimes.com Continue reading the main story July 31, 2020 Your Friday Evening Briefing By Remy Tumin and Marcus Payadue Good evening. Here’s the latest. Pool photo by Erin Scott 1. The Trump administration’s coronavirus testing czar offered a sober assessment of rapid testing in the U.S. Adm. Brett Giroir, above, told Congress that getting all coronavirus test results back between 48 and 72 hours , which many health officials say is critical, “is not a possible benchmark we can achieve today given the demand and the supply.” Dr. Giroir said the nation is now averaging about 820,000 tests each day, up from 550,000 earlier this month, and that most results were coming back quickly. But that doesn’t reflect what many public health experts are seeing on the ground . One consequence of delayed testing: contact tracing is failing in many states . At the same hearing, Dr. Anthony Fauci, the nation’s top infectious disease expert, sai