Hepatitis Drug Breakthrough

Lazyhound writes "The BBC reports that scientists at the University of Texas Southwestern Medical Center in Dallas are running clinical trials on a new drug (similar to those used to treat HIV patients) that can dramatically reduce levels of the virus in only days."

Does this affect the transmission of Hep C?

[Tropaios]

If the virus makes defective copies of itself is there a lessened chance of transmission? It seems they would still be a carrier of the disease but could they transmit it? If the virus is crippled and could not infect new cells it would seem contact with contaminated blood would be much less dangerous.