J&J folks: This is what we know

There are 14.6 million people in the United States left in the dark about their Johnson and Johnson (J&J) shot. Does it work against Delta? Is it safe and effective to get a second J&J shot? Can J&J folks mix shots? If so, which mix is the best?

We don’t know much and I’m incredibly frustrated about this. The lack of guidance or just plain communication …