The shortage of vaccines closes the Petco superstation while another clinic opens on the fairgrounds Del Mar

The county’s newest super vaccination post opened Friday morning at Del Mar Fairgrounds for a test of about 288 patients, the same day that a missed shipment of the Modern vaccine raised concerns across the county about the reduction supplies.

Also on Friday, the state announced that, starting March 15, vaccinations will be available to a larger group of people, including those 64 and under with cancer, obesity and other underlying diseases.

Vaccinations will slow down for the time being in San Diego County because of limited supply and, in some cases, consultations will have to be rescheduled. The largest site in the county, UC San Diego Health Petco Super Station, will not deliver vaccines on Sundays, Mondays and Tuesdays, and appointments will automatically be rescheduled via UCSD’s MyChart, officials said.

Second doses will continue to be the priority in all locations. The South County and East County superstores have enough supplies to survive on Monday, and the North County superstore in San Marcos has enough supplies to meet second dose appointments and a limited supply of first doses.

Nathan Fletcher, chairman of the San Diego County Board of Supervisors, said Friday afternoon that the break, while unwanted, is not entirely unexpected.

“We are facing a situation with a very erratic and unstable supply chain and we knew that situations like this, although we tried to avoid them, are bound to happen,” said Fletcher.

Even when the current situation with Moderna resolves, he noted, the need for second doses by those who have already received the first doses is likely to produce a situation in which few first dose consultations are available.

“There is a very real likelihood, in the coming weeks, given the current supply we are receiving, that there will be a period of time when there will be very few first dose appointments available,” said Fletcher.

California officials said on Friday that people aged 16 to 64 who are disabled or at high risk of COVID-19 morbidity and mortality will be eligible to be vaccinated starting next month.

The move comes after weeks of debate over who will get to the front of the line for precious doses, which remain in short supply. Officials estimate that the move will make 4 million to 6 million people eligible for the vaccine, bringing the total number of eligible Californians to between 17 million and 20 million, or about half the state.

Ultimately, it will be up to local providers to decide who gets the vaccine immediately, with medical professionals, first responders, people aged 65 and over, teachers and essential professionals, all competing for vaccines.