Nation Trump reports feeling better, but here’s why the next few days are ‘the real test’ in his COVID-19 battle October 3, 2020October 4, 2020Joel Shannon and Elizabeth Weise, USA TODAYComments Off on Trump reports feeling better, but here’s why the next few days are ‘the real test’ in his COVID-19 battle Several days after symptoms of COVID-19 appear, the body's immune system must make a critical switch to fight the virus with precision.