The director of the nation’s top public health agency said Monday that the drops in COVID-19 cases, hospitalizations, and deaths could be erased in the near future due to new variants of the virus that causes the disease. The number of daily new cases has dropped sharply in recent weeks but there’s evidence the declines are stalling around 70,000 cases a day, according to Centers for Disease Control and Prevention (CDC) Director Rochelle Walensky. “With these new statistics, I am really worried about reports that more states are rolling back the exact public health measures we have recommended to protect people from COVID-19. I understand the temptation to do this. Seventy thousand cases a day seemed good compared to where we were just a few months ago. But we cannot be resigned to 70,000 cases a day, 2,000 daily deaths,” she said during a virtual briefing. “Please hear me clearly: …