By Trevor Hunnicutt and Jeff Mason WASHINGTON (Reuters) -U.S. President Joe Biden celebrated his recovery from COVID-19 on Wednesday with an appeal to Americans to get vaccinated and a comparison of his mild symptoms and work-from-home performance to the more serious case experienced by his predecessor. Biden, who is 79, ended his isolation period from COVID-19 after testing negative on Tuesday evening and again on Wednesday morning. During remarks to staff and reporters at the White House, he said he recovered without fear thanks to good care and readily available medicine. Biden won the 2020…