Vaccine appointments already made in New York are not expected to be affected by the sharp reduction in Johnson & Johnson vaccine doses for New York, Gov. Andrew Cuomo said Friday. 

New York is set to receive 34,900 doses of the one-shot Johnson & Johnson vaccine in week 18 of the vaccine administration, an 88% reduction, Cuomo said. 

Supply of the vaccine was affected by a factory error that led to the spoiling of 15 million doses. New York also administers shots of the Pfizer and Moderna-manufactured shots, which require two doses.

"Vaccines are the weapon that will win the war against COVID, and with over 11 million shots in arms — including 1.4 million doses administered in just the last seven days — New York's vast distribution network is firing on all cylinders," Cuomo said. "As has been the case since the beginning of our vaccination effort, the X-factor is supply, supply, supply, and like every other state, our allocation of Johnson & Johnson doses will be significantly lower next week."

More than 294,000 vaccine doses were administered in New York in the last 24 hours, the governor's office announced on Friday. So far, more than 23% of New York's residents have completed the vaccine cycle. 

New Yorkers age 16 and older are now eligible for the vaccine.