Emergent BioSolutions halts operations at its Baltimore plant, where J.&J. doses were ruined, at the F.D.A.’s request. The New York TimesNew survey finds some COVID long haulers make dramatic improvements post-vaccination CBS This MorningU.S. vaccinations hold steady as deadline arrives to open eligibility to all adults CNBCPharmacy: Customers wait for Johnson & Johnson shot's return Bay News 9What to know about the COVID-19 vaccination effort in Mass.