Rare case of woman-to-woman HIV reported

The 46-year-old "likely acquired" human immunodeficiency virus while in a monogamous relationship with an HIV-positive female partner in Texas, said the Centers for Disease Control and Prevention on Thursday.

The woman, whose name was not released, had engaged in heterosexual relationships in the past, but not in the 10 years prior to her HIV infection.

Her HIV-positive partner, a 43-year-old woman who first tested positive in 2008, was her only sexual partner in the six months leading up to the test that came back positive for HIV.

She did not report any other risk factors for acquiring the virus, such as IV drug use, organ transplantation, tattoos, acupuncture or unprotected heterosexual sex.

The strain of HIV with which she was infected was a 98% genetic match to her partner's, said the CDC in its weekly report.

Authorities first learned of the case in August 2012 from the Houston Department of Health.

The couple