There are two types of herpes simplex virus - HSV-1 is the type responsible for cold sores while HSV-2 causes genital herpes.
The herpes simplex virus type 1 should not be confused with the herpes simplex virus type 2 (HSV-2), which most often causes genital herpes.
Genital herpes, which is usually caused by herpes simplex virus type 2 (HSV-2), is a sexually transmitted disease that causes painful sores on the genitals.
The most serious risk to the infant is the possibility of developing HSV-2 encephalitis, an inflammation of the brain, with symptoms of irritability and poor feeding.
The sore can be cultured and tested to confirm that HSV-2 is present.
Infants with suspected HSV-2 can be treated with acyclovir.
Herpes simplex virus 2 (HSV-2) is sexually transmitted and is usually associated with genital ulcers or sores.
Individuals may harbor HSV-1 and or HSV-2 and not have developed any symptoms.
HSV-2 is sexually transmitted and not everyone develops symptoms when they have it.
Up to 30 percent of adults in the United States have antibodies against HSV-2.
Up to 30 percent of adults test seropositive for HSV-2.
The highest incidence of HSV-2 is in young adults between the age of 18 and 25 years.
HSV-2 antibodies are present in approximately 20 percent of Caucasians and about 65 percent of African-American adults.
Transmission is generally via respiratory droplets (HSV-1) or direct contact (HSV-1 and HSV-2).
Herpes simplex virus: Two different types of HSV (HSV-1 and HSV-2) cause lesions on the genitals, although HSV-2 is associated with the majority of cases.
Studies indicate that one in six Americans is infected with HSV-2, reflecting a ninefold increase between 1975 and 2005.
Prevalence of HSV-2 in adolescents and young adults varies by the demographic and behavioral characteristics of the populations studied as well as the diagnostic methods used.
As of the early 2000s approximately 4 percent of Caucasians and 17 percent of African Americans are infected with HSV-2 by the end of their teenage years.
One study of young pregnant women of low income status found an HSV-2 infection rate of 11 percent in women 15 to 19 years of age and 22 percent in women 25 to 29 years of age.
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