Two medical professionals testified in court that a Georgia man accused of knowingly exposing women to HIV could not be found guilty because no test can prove conclusively that he—or anyone—has HIV, The Atlanta Journal-Constitution reports. Craig Lamar Davis faces up to 20 years in prison if convicted on two felony counts of reckless HIV. Two women in the Atlanta area accuse Davis of exposing them to the virus. He confirms having sex with one of them, but denies he had sex with the other. Nancy Banks, MD, told the court that no definitive tests exist to determine someone has HIV. She said his crack cocaine use could have caused his HIV diagnosis. David Rasnick, a pharmaceutical chemist, also told the court that crack cocaine use can suppress the immune system. The Office of Medical and Scientific Justice, a private agency based in California that focuses on HIV criminalization cases, brought in the defense witnesses. The validity of HIV testing is generally accepted in the medical community.

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