Please check my answer thank you for your help.

1. Which of the following disclosures would not be allowed under the HIPAA privacy rule? ( Assume that the patients haven't authorized the release of their PHI)

A. A drug rehab center releases details of a celebrity's struggle with addiction as part of a public service advertisement against drugs. x
B. A hospital releases details of an Ebola patient's illness and treatment to the CDC.
C. An employer releases details of an employee's disabling accident to OSHA.
D. Doctor's in California release details of a patient diagnosis of food poisoning linked to tainted orange juice to the FDA.

My answer is A. A drug rehab center releases details of a celebrity's struggle with addiction as part of a public service advertisement against drugs.

I agree. B, C and D are allowed.