But doctors said the lack of expertise and vaccine skepticism on display during much of the discussion would only further dilute public trust in science and public health guidance. It was, frankly, an alarming attempt to undermine one of the most successful public health systems in the world,” O’Leary said. As chair Martin Kulldorff called the vote, several committee members complained that they did not understand the proposal as it was written. In some cases, the new ACIP members also lack medical or public health experience of any kind. New recommendations to the vaccine schedule are typically written before ACIP meetings in consultation with expert working groups that advise committee members year-round, Offit said.