And daily Covid-19 deaths in the US have been increasing. The daily average across seven days was 1,477 on Friday. But more than 2,100 deaths were reported on each of the two days before Thanksgiving, the first time that level was crossed on consecutive days since late April. And while there is more good news on the vaccine front, for now Americans need to “hunker down” and prepare for a difficult winter ahead, according to Dr. Leana Wen, an emergency medicine physician and a visiting professor at George Washington University Milken Institute School of Public Health.
“We cannot let our guard down,” she told CNN Friday night. “The vaccines will make a big difference in the spring and the summer; they’re not going to make a difference right now.”
Just how small is a single SARS-Cov-2 virion (viral particle)?