United States coronavirus death toll surpasses 25,000, cases nearing 600,000; Awaiting White House coronavirus briefing; Harvard scientists: United States may need social distancing until 2022; Dr. Gupta answers your questions about the virus;

Battle escalates between Trump, governors over reopening United States; California Governor Newsom outlines moves to reopen state; Scientists project United States may have to endure social distancing until 2022 if no vaccine; New York Governor: Trump "spoiling for a fight" over power to reopen United States; Governors forming regional pacts to decide how to reopen states despite Trump's "total" authority claim; South Dakota virus cluster sparks calls for stay-at-home order; Farmers destroy crops as consumers struggle to find food; Students face uncertainty as Trump eyes reopening country; Florida surgeon general: We must adapt to "new normal"; Trump implies governors who reject his claim of "total" authority engaging in "mutiny"; New York Governor: "I wouldn't do it" if Trump ordered me to reopen state in a way that endangered health; Trump meets with virus survivors, pushes unproven treatment; Connecticut reporting 602 deaths, 13,000+ cases; Key medical test for return to normal; Governor ro California: You "bent the curve"; California governor stops short of setting timeline to reopen; California Governor outlines plan to reopen with west coast states; California health director: Face coverings will be common in public; FDA approves use of new saliva test for coronavirus; Fauci: "We're not there yet" on reopening, May 1 "overly optimistic"; FDA tightens enforcement on Covid-19 antibody tests; Warning of safety issues at Wuhan lab; Washington Post: State Department cables warned of safety issues at Wuhan lab studying bat coronaviruses; Washington Post: after 2018 visit, United States diplomats warned of safety and management weaknesses at Wuhan lab; Washington Post: Cables fueling discussion about whether labs in China were source of virus; no conclusive proof yet;

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