WASHINGTON (AP) – President Joe Biden and CDC Director Dr. Rochelle Walensky are making impassioned pleas to Americans not to let their guard down in the fight against COVID-19. Walensky warned on Monday of a potential “fourth surge” of the virus and spoke of a “recurring feeling … of impending doom.” Biden said the virus will get worse, not better “if we let our guard down now.” He said that “people are letting up on precautions, which is a very bad thing.” Walensky spoke of hope but added, “Right now, I’m scared.”