'20/20' Anchor Elizabeth Vargas In Rehab for Alcohol Abuse

'20/20' Anchor Elizabeth Vargas In Rehab for Alcohol Abuse

“20/20” co-anchor Elizabeth Vargas has been MIA for weeks ... and now we know why -- she's been in rehab for alcohol abuse.Vargas checked into rehab a couple weeks ago -- according to the NY Daily News -- and will remain in treatment for…

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