WARSAW, Poland — Poland will be administering the AstraZeneca vaccine to people ages 18 to 60.

That comes on recommendations from medical experts, the government’s official in charge of the national vaccination program said Tuesday.

Michal Dworczyk said some 500,000 doses of the AstraZeneca vaccine will come to Poland next week. They are to be administered chiefly to teachers, starting as soon as the vaccine is available.

Dworczyk dismissed comments by the head of teachers’ union, Slawomir Broniarz, who said some teachers would prefer to be given Pfizer or Moderna vaccines, believing they are more efficient. The AstraZeneca vaccine has a reported efficacy rate of about 60 to 70%.

Last week Germany said it wouldn’t be giving the AstraZeneca vaccine to people over 65, citing insufficient data collected on its efficacy.

In February, Poland is expected to receive some 1.4 million dozes of the Pfizer vaccine and some 350,000 doses of Moderna. More than 1.2 million people have received the Pfizer or Moderna shots, and 200,000 have received the second dose.