Mount Sinai will require all employees to get vaccinated against COVID-19, the hospital said Thursday.

The announcement comes as health systems across the country impose vaccine mandates for employees as the delta variant continues to spread.

All employees will be required to get their first shot by Sept. 13 or will be subject to disciplinary action and possibly termination. There will be exceptions for religious and medical reasons and excludes employees who work fully remotely, according to an internal message sent to staff.

NewYork-Presbyterian Hospital announced on June 14 that all of its employees must get vaccinated by Sept. 1 or potentially be out of job, becoming the first hospital system in the state to require employees to get the COVID-19 vaccine.

Mayor Bill de Blasio has continued to push for residents to get vaccinated, introducing various incentives including $100 pre-paid debit cards for getting the shot, and requiring proof of vaccinations at gyms, bars, restaurants and live performances.

Late last month, the mayor announced that the city would require all workers at city-run hospitals and clinics to get vaccinated by Aug. 2, or undergo regular testing. If a worker refuses both, they will be suspended without pay.

A week later, Gov. Andrew Cuomo announced that all state workers would be required to get vaccinated by Labor Day or undergo regular testing.

According to date from the city Health Department, 61.8% of the city's population has received at least one dose of the vaccination, with 55.9% fully vaccinated.

The Bronx has the lowest number of fully vaccinated residents at 47%.