COVID-19 updates: American Airlines to require employee vaccinations

A three-judge panel from the 2nd U.S. Circuit Court of Appeals has dissolved a temporary injunction that halted New York City's vaccine mandate for school staff.

The panel offered no explanation and cleared the way for the city to enforcement the public school vaccine mandate.

"Vaccinations are our strongest tool in the fight against COVID-19 – this ruling is on the right side of the law and will protect our students and staff," New York City's Department of Education said in a statement.

As of Monday night, 87% of DOE employees, including 91% of teachers and 97% of principals, have at least one shot, according to the DOE.

Mayor Bill de Blasio said public school employees will have until the end of day Friday to get at least one dose of vaccine.

Michael Mulgrew, the president of the United Federation of Teachers, released a statement Monday night saying, "We will be working with our members to ensure, as far as possible, that our schools can open safely as the vaccine mandate is enforced."

-ABC News' Aaron Katersky

First lady Jill Biden received her COVID-19 booster shot Monday, according to Michael LaRosa, her spokesman.

The shot was administered at the White House in the afternoon, LaRosa told ABC News.

-ABC News' Ben Gittleson

An Arizona judge ruled Monday that the state's ban on mask mandates in schools is unconstitutional.

Judge Katherine Cooper sided with the Arizona School Boards Association, which contended that the Arizona State Legislature's law to ban school districts from issuing a mask mandate violates the state constitution's title requirement and single subject rule.

The association argued that the legislature included policy regarding 30 subjects into one bill.

"The single subject rule precludes legislators from combining unrelated provisions into one bill to garner votes for disfavored measures. Together, these requirements promote transparency and the public’s access to information about legislative action," the judge wrote in her decision.

The law was slated to go into effect on Sept. 29.

The state has until Nov. 1 to file an objection or response to the ruling.

Novant Health announced Monday that it terminated around 175 staff members at its medical centers who failed to comply with its vaccine mandate.

Novant's system includes 15 hospitals, 800 clinics and hundreds of outpatient facilities throughout North Carolina.

Last week, 375 members were unvaccinated -- despite a Sept. 15 deadline for the mandate -- and suspended, the hospital said.

Since then, 200 members have received at least one shot and 99% of Novant's 35,000 team members are compliant, according to the hospital's administrators.

Employees who received an mRNA vaccine have until Oct. 15 to get their second dose, Novant said in a statement.

-ABC News' Brian Hartman