Herpes simplex virus 1 and 2 (HSV-1 and HSV-2) are two different species of the herpes virus family and the immune system of the body recognizes them as different. Having HSV 1 infection does not necessarily protect against HSV 2 infection. The location of the infection also cannot clearly indicate the exact species of Herpes Simplex Virus.
Although HSV-1 infection is much more common as herpes labialis (affecting the oral mucosa) and HSV-2 infection is much more expressed as herpes genitalis (affecting the genitals), there are reported cases with increasing frequency of HSV-1 caused herpes genitalis and HSV-2 caused herpes labialis.
However, the immune system recognizes them once it gets in contact with the species. So, it is rather rare that a person that already has HSV-1 or HSV-2 infection on one location (labialis or genitalis) acquires infection with the same species on the other location.
You might want to consult with a dermatologist for additional information about possible simultaneous infection and manifestation of both HSV-1 and HSV-2.
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