Rav Kanievsky said, in response to Professor Zarka's request for a bracha for success along with his own call for people to vaccinate, and 3rd dose if relevant, that we have the vaccines due to heavenly assistance and everyone should take them to prevent sickness and bittul torah. Additionally Rav Kanievsky said that every person should do everything possible to avoid getting infected and to avoid infecting others and to adhere to the guidance and rules of the Ministry of Health.

Professor Zalka asked Rav Kanievsky about the school system, with many teachers and other staff  - estimated at about 3500 people in the Haredi school system - still unvaccinated while coming into contact with children that cannot yet be vaccinated. Rav Kaniebsky issued a psak that all men and women, all teachers in the schools must get vaccinated, and principals of schools should suspend teachers who will not vaccinate.

source: Kikar