Yellen is heading to a scheduled dinner

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Wow ... good news, it would appear she is fine

More:

Bloomberg report :

  • Yellen is fine, University of Massachusetts Medic Shauna Rice says

CNBC tweet:

  • UPDATE: Secret Service says Fed Chair Janet Yellen is ok after feeling light-headed during speech

Reuters:

  • Yellen was walking without assistance - one university official

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More from medic Shauna Rice - says Yellen didn't got to hospital