Only those eligible to receive the vaccine are being permitted to register on the county site, officials said.

UNION COUNTY, NJ — The county opened its online registration system for the COVID-19 vaccine Wednesday, one day before the vaccines are being made available to residents 65 and older and certain people with chronic medical conditions.

Union County officials announced that the portal is open only to those who are eligible to receive the vaccine. People who are not yet eligible to get the vaccine must wait until they become eligible, officials said.

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Those who are eligible to receive the vaccine include paid and unpaid persons serving in health care settings who have the potential for direct or indirect exposure to patients or infectious materials and long-term care residents and staff, and also sworn law enforcement personnel and fire professionals, county officials said in a news release.

“We are working hard to vaccinate as many people as we can during this time,” said Union County Commissioner Sergio Granados, who chairs the County’s Public Safety Committee. “We have put into place measures such as a new registration page that will ensure we can meet the demand once the state provides more vaccines.”

Beginning Thursday, anyone 65 and older and persons aged 16 to 64 years old, who have at least one chronic medical condition that poses high-risk for severe COVID-19, become eligible to receive the vaccine, officials said.

Formal establishment of the county’s registration page follows the state Health Department’s setting up of a statewide registration page, where anyone can pre-register to get the vaccine. Union County began administering vaccines to healthcare workers on Jan. 7, officials said.

The county’s COVID-19 vaccination clinic is located at Downs Hall at Kean University in Union and is open five days a week from 3 to 7 p.m., officials said.

“Once more vaccines are available, the County is planning to offer the COVID-19 vaccine in different areas of the County,” the officials said.