Susan Monarez, the ousted former director of the Centers for Disease Control and Prevention, plans to warn a Senate committee Wednesday that if a vaccine panel proceeds with a meeting scheduled for this week, there’s a “real risk” vaccines for children could be limited, according to testimony obtained by CBS News.

She also plans to tell lawmakers her side of the story about a contentious meeting with Health and Human Services Secretary Robert F. Kennedy Jr. that preceded her removal as director, after Kennedy testified to the same Senate panel earlier this month that Monarez had said “no” when he asked her if she was “trustworthy.”