What is a plaintiff's right to privacy information?

Individuals have a constitutionally protected interest in avoiding "disclosure of personal matters," including medical information. See Whalen v. Roe, 429 U.S. 589, 599, 97 S.Ct. 869, 51 L.Ed.2d 64 (1977). "Like the right to decide whether to terminate a pregnancy, the right to informational privacy is not absolute; rather, it is a conditional right which may be infringed upon a showing of proper governmental interest." Lawall II, 307 F.3d at 790 (internal quotation marks omitted).