J&J’s Limbo Crimps U.S. Vaccine Drive at a Pivotal Moment Bloomberg 3 hrs ago Angelica LaVito and Fiona Rutherford (Bloomberg) -- Communities across the U.S. are suddenly revamping their vaccination campaigns to adjust to an indefinite halt in Johnson & Johnson’s doses, which has required officials to reschedule tens of thousands of appointments as they seek to reassure people that Covid-19 vaccines are safe. Health professionals are split on whether the delay should continue. On the one hand, the blood-clotting syndrome that led to the pause in J&J vaccinations is serious and can be deadly. Conversely, with J&J doses out of circulation, that means fewer people are getting immunized even as fast-spreading Covid variants are tightening their grip, and concern about the J&J shots risks expanding vaccine hesitancy.