NEW YORK — “Hamilton” and “Aladdin,” two of Broadway’s biggest musicals, are shuttering their doors during the busy Christmas week after finding breakthrough COVID-19 cases in their companies.

All matinee and evening performances of “Aladdin” from Tuesday through Friday were canceled. Performances are scheduled to resume Sunday. “Aladdin” had previously canceled its Dec. 19 performance.

“Hamilton” canceled shows on Tuesday, Wednesday, Thursday, Friday, and Sunday, and performances are scheduled to resume Dec. 27. The production had previously canceled its Dec. 17 through Dec. 19 performances, as well as its Dec. 15 show due to the detection of positive results.

The two hit shows join “Mrs. Doubtfire,” “MJ” and “Ain’t Too Proud,” among others, in announcing multi-day cancellations due to the virus. Shows often add performances around Christmas week and the holidays are usually the most lucrative shows of the year.

Answers to 25 common COVID-19 vaccine questions

Vaccinations for COVID-19 began being administered in the U.S. on Dec. 14, 2020. The quick rollout came a little more than a year after the virus was first identified in November 2019. The impressive speed with which vaccines were developed has also left a lot of people with a lot of questions. The questions range from the practical—how will I get vaccinated?—to the scientific—how do these vaccines even work?

Keep reading to discover answers to 25 common COVID-19 vaccine questions.