NEW YORK — The Metropolitan Opera has canceled performances and rehearsals through March 31 because of the coronavirus.

The move was announced Thursday, one day after U.S. President Donald Trump announced a suspension of travel to the U.S. from Europe for 30 days starting Friday.

Many of the Met’s singers and conductors travel regularly from Europe. Soprano Anna Netrebko posted on Instagram on Wednesday that she would not be traveling to New York for performances of Puccini’s “Tosca” that had been scheduled to start March 26.

For most people, the new coronavirus causes only mild or moderate symptoms, such as fever and cough. For some, especially older adults and people with existing health problems, it can cause more severe illness, including pneumonia.

The vast majority of people recover from the new virus. According to the World Health Organization, people with mild illness recover in about two weeks, while those with more severe illness may take three to six weeks to recover.

Among the 21 canceled Met Opera performances is this Saturday’s matinee of a new staging of Wagner’s “Der Fliegende Hollander (The Flying Dutchman)” that was to have been televised to movie theaters around the world. Also canceled was a March 29 recital by soprano Diana Damrau with Royal Opera music director Antonio Pappano at the piano.

Carnegie Hall also announced it was closing its doors at midnight Thursday for all public events through the end of March, cancelling performances from The Philadelphia Orchestra, Angelique Kidjo, the Castalian String Quartet and Musical Armenia.