The coronavirus refuses to go away this summer, as a new Delta variant proves more aggressive, and more transmissible, than any respiratory virus in recent memory. Worryingly, only half the country has been vaccinated. Former FDA Commissioner Dr. Scott Gottlieb, who is also on the board of Pfizer, appeared on Face the Nation yesterday to explain how to keep yourself safe given the rising cases, hospitalizations and deaths. Read on for his five essential pieces of advice—and to ensure your health and the health of others, don't miss these Sure Signs You Have "Long" COVID and May Not Even Know It.