By The Associated Press undefined The Latest on the coronavirus pandemic. The new coronavirus causes mild or moderate symptoms for most people. For some, especially older adults and people with existing health problems, it can cause more severe illness or death. TOP OF THE HOUR: —Germany experts say vaccine, herd immunity vital. —US to let federal social distancing guidelines expire. —Britain's death toll jumps over 26,000 with nursing home deaths. —As lockdowns ease, health officials urge virus vigilance. ___ WASHINGTON — President Donald Trump says the federal government will not be extending its social distancing guidelines when they expire Thursday at the end of the month. Trump told reporters in the Oval Office that the coronavirus guidelines will be "fading out" because of work that governors are doing in their states. Vice President Mike Pence said the guidelines issued 45 days ago have been incorporated into guidance provided to the states on how they can begin the process of gradually reopening their economies. The guidelines – which were originally supposed to last 15 days and were then extended another 30 - included encouraging Americans to work from home and avoid restaurants and discretionary travel as well as telling older Americans and those with serious underlying health conditions to isolate themselves.