Kaci Hickox on bike ride surrounded by press
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Ebola nurse's bike ride makes a quarantine defying point

A US nurse who returned from treating Ebola patients in Sierra Leone has defied a quarantine order, leaving her house in Maine for a brief bike ride.

Kaci Hickox maintains isolation is unnecessary, as she has no symptoms and has tested negative for Ebola.

Maine officials have vowed to go to court to try to enforce the quarantine.

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