âNot Out of the Woodsâ: C.D.C. Issues Warning to the Unvaccinated The renewed sense of urgency was aimed at millions of people who have not yet been vaccinated and therefore are most likely to be infected. Intensive care units are filled or filling in unvaccinated parts of the country like northern Arkansas.Credit...Erin Schaff/The New York Times July 22, 2021 WASHINGTON â The director of the Centers for Disease Control and Prevention warned on Thursday that the United States was ânot out of the woods yetâ on the pandemic and was once again at a âpivotal pointâ as the highly infectious Delta variant ripped through unvaccinated communities.