Identifying asymptomatic people with genital herpes infection through targeted screening of high-risk groups may prevent disease transmission. However, widespread screening of pregnant women is unlikely to reduce the occurrence of herpes in newborns, according to an article in the January 1 issue of Clinical Infectious Diseases, now available online.
Herpes simplex virus type 2 (HSV-2) infects more than one-fifth of the United States population, but about 90 percent of those people are unaware that they are infected, since most do not experience any symptoms. In this case, though, ignorance is not bliss--a person infected with HSV-2 can unknowingly pass the virus to sexual partners and has a doubled risk of contracting HIV from unprotected sex.
Screening for HSV-2 has become possible with the advent of a blood test that can detect antibodies to the virus. A committee of sexually transmitted disease (STD) experts in California considered the potential risks and benefits of HSV-2 screening in four groups of asymptomatic people: people at high risk for STDs, HIV-positive people, people whose partners have HSV-2 and pregnant women. The authors found that the first three groups are likely to benefit from screening for HSV-2. Infected individuals could be counseled regarding condom use and advised about changing their behavior to reduce the risk of acquiring HIV or transmitting genital herpes.