Complex Booster Plan Muddies Vaccine Message for Weary Public (1)

Federal clearance of Moderna and Johnson & Johnson Covid-19 boosters, and signoff on mixing and matching doses, add complexity to an already struggling government messaging campaign—but the advice may be simpler than it appears.

Rapidly-changing guidance from health and policy officials and the ensuing spread of misinformation, particularly via social media, has plagued the government’s push for Americans to get their first Covid-19 vaccine doses.

Now, authorization from the Food and Drug Administration and signoff from the Centers for Disease Control and Prevention put additional doses on the table for millions of Americans who received J&J and Moderna as first ...