WASHINGTON — Supreme Court Justice Amy Coney Barrett on Thursday refused to block a plan by Indiana University to require students and employees to get vaccinated against COVID-19.

Barrett's action came in response to an emergency request from eight students, and it marked the first time the high court has weighed in on a vaccine mandate. Some corporations, states and cities have adopted vaccine requirements for workers or even to dine indoors, and others are considering doing so.

The students said in court papers that they have “a constitutional right to bodily integrity, autonomy, and of medical treatment choice in the context of a vaccination mandate.” They wanted the high court to issue an order barring the university from enforcing the mandate. Seven of the students qualify for a religious exemption.

College officials across the country have struggled with whether to require vaccinations, with some schools mandating them and others questioning whether they have legal authority to do so. Similar lawsuits against student vaccine requirements have been filed in other states.

Justices often act on their own in such situations when the legal question isn't particularly close. Barrett handles emergency matters from the U.S. Court of Appeals for the 7th Circuit, which includes Indiana.