Kate McKinnon returned to playing Dr. Anthony Fauci on a momentous week for Covid-19 guidance: The announcement that those who are fully vaccinated can go without a mask outdoors and indoors, with some exceptions.

The spoof was on the Centers for Disease Control attempting to explain just what those exceptions are and mask guidance going forward, amid a confusing set of circumstances and a public not always ready to follow along.

As the self-described “patron saint of Purell,” Fauci’s solution is to let the CDC’s own acting repertoire try to act out various Covid-19 safety guidance, via a set of rather inane improv scenes.

“As you probably heard, we got some very good news this week, and I am not just talking about JLo and Ben Affleck,” Fauci says. “The CDC announced that people who are vaccinated no longer need to wear masks, both outdoors and indoors, pretty great,...