"Because it is possible to get a negative result even when you have coronavirus, it is important to be careful even when you receive a negative result."
(CNN) It's easy to fall into a false sense of security now that states have reopened. And many are already paying the price. States are shutting down businesses again . Popular beaches have closed . And the rate of new Covid-19 infections keeps growing in most states , threatening to reverse the progress made during stay-at-home orders. So what happened? When states reopened to try to save the economy, the fate of this pandemic shifted from government mandates to personal responsibility. But many are not heeding that responsibility, instead letting their guard down too early due to popular misconceptions: If the economy is open, the pandemic is getting better, right? No. "This is not even close to being over," the head of the World Health Organization said. Only about 5% to 8% of the US population has been infected with this new coronavirus, meaning we have a long way to go before reaching herd immunity . Gatherings in home...