HIV-positive doctor says his dog saved his life

In this photo taken on Monday, Nov. 2, 2015, Dr. Rob Garofalo pets his dog, Fred, at their home in Chicago. (AP Photo/Martha Irvine)

"When Dogs Heal" tells the stories of HIV-positive people and their dogs in an exhibit launching in Chicago on Tuesday, Dec. 1, which is World AIDS Day, and also in New York City two days later.

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