The authorities in Ohio, New York, New Jersey, Connecticut, Massachusetts, Maryland, Nebraska, Georgia, Indiana, Texas and Virginia said on Tuesday that they would follow the call from federal health agencies to pause the administration of Johnson & Johnson’s vaccine after six women in the United States developed a rare disorder involving blood clots within about two weeks of vaccination.
CVS, the nation’s largest retail pharmacy chain, also said that it would immediately stop its use of Johnson & Johnson vaccinations and was emailing customers whose appointments would be canceled. A spokesman said that CVS would reschedule appointments “as soon as possible.”
Gov. Mike DeWine of Ohio and the state’s chief health official said they were advising all state vaccine providers to temporarily halt use of the single-dose vaccine. New York’s health commissioner, Dr. Howard Zucker, said the state would stop using the Johnson & Johnson vaccine, while the Food and Drug Administration and the Centers for Disease Control and Prevention evaluate the safety risks.
Connecticut health officials said they told vaccine providers to delay planned appointments and give an alternative option if they had the supply.
vaccination eligibility to all adults and others plan to by next week.
“Over the last few weeks, we have made available more than 25 million doses of Pfizer and Moderna each week, and in fact this week we will make available 28 million doses of these vaccines. This is more than enough supply to continue the current pace of vaccinations of 3 million shots per day,” Mr. Zients said in a statement.
Even though the reaction to the Johnson & Johnson shot is rare, any questions about the safety of the shots could bolster vaccine hesitancy.
Nearly seven million people in the United States have received Johnson & Johnson shots so far, and roughly nine million more doses have been shipped out to the states, according to data from the Centers for Disease Control and Prevention. The six women who developed blood clots were between the ages of 18 and 48. One woman died and a second woman in Nebraska has been hospitalized in critical condition.
“Right now, these adverse events appear to be extremely rare,” Dr. Peter Marks, director of the Food and Drug Administration’s Center for Biologics Evaluation and Research, and Dr. Anne Schuchat, principal deputy director of the C.D.C., said in a joint statement on Tuesday. “People who have received the J&J vaccine who develop severe headache, abdominal pain, leg pain, or shortness of breath within three weeks after vaccination should contact their health care provider.”
York had already prepared for a significant drop in its supply of the Johnson & Johnson vaccine after federal officials said that supplies would be limited because of a production issue at a Baltimore manufacturing plant. On Friday, Gov. Andrew M. Cuomo said that New York expected to receive 34,900 Johnson & Johnson shots, a decrease of 88 percent from the previous week.
Dr. Zucker, New York’s health commissioner, said that the state would honor appointments made at state-run mass vaccination sites for the Johnson & Johnson vaccine by giving people the Pfizer-BioNTech vaccine instead. That vaccine requires two doses, and it was not immediately clear how the state would handle the additional strain on its supply.
Mayor Bill de Blasio of New York City said that the city would work to reschedule appointments at city-run vaccine sites, giving those people the Pfizer or Moderna vaccines instead.
“Every site has been told this morning to stop giving the J&J shots,” he said at a news conference.
Mr. Cuomo received the Johnson & Johnson vaccine at a public appearance last month in Harlem, which he framed as an effort to boost confidence in that vaccine’s efficacy rate and to address vaccine hesitancy.
Regulators in Europe and elsewhere are concerned about a similar issue with another coronavirus vaccine, developed by AstraZeneca and Oxford University researchers. That vaccine has not been authorized for emergency use in the United States.