"When we first saw it, in the mid- to late-90's, it used to be just from drugs, but now there's sexual transmission as well."

Over 90 percent of the reported cases were the result of sexual transmission.

Abstinence is the only absolutely sure way to prevent sexual transmission of the virus.

Few advised their patients about the risk of sexual transmission; therapy was not recommended.

The results indicated that early treatment with antiviral therapy reduced sexual transmission by at least 96 percent.

The only way you can catch it is by sexual transmission.

However, abstinence is the only sure way to prevent sexual transmission of the virus.

First, there is an extreme bottleneck in viral diversity at the time of sexual transmission.

DCs are one of the first cells encountered by the virus during sexual transmission.

Some experts feel that the analogy to sexual transmission of the infection is too powerful to ignore.