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.

Former U.S. CDC Director Susan Monarez told a Senate panel on Wednesday that Health Secretary Robert F. Kennedy Jr. told her two days before her August firing that the childhood vaccination schedule would change in September.