German researchers say the United States is only detecting 1.6% of novel coronavirus cases, suggesting there may already be some 26 million infections nationally, 1 million in Florida and several tens of millions worldwide.
In a way, a potentially much higher denominator portends good news of much lower death rates than previously feared. But because of delayed or insufficient testing, the German researchers also conclude that current case counts aren’t very useful information, especially in the U.S., Italy, Spain and the United Kingdom, where response to COVID-19 outbreaks has been slower. So they call for urgent improvement in detecting new infections to contain the virus and prevent second and subsequent "waves" of spread.