What is a main difference between HSV-1 and HSV-2?
HSV-1 is mainly transmitted by oral-to-oral contact to cause oral herpes (which can include symptoms known as “cold sores”), but can also cause genital herpes. HSV-2 is a sexually transmitted infection that causes genital herpes.
How can PCR test tell the difference between HSV-1 and HSV-2?
PCR finds the genetic material (DNA) of the HSV virus. This test can tell the difference between HSV-1 and HSV-2. Using the PCR test on skin sores isn’t common. PCR is used mainly for testing spinal fluid in rare cases when herpes may have caused an infection in or around the brain.
Is there a genetic difference between HSV-1 and HSV-2?
“The main difference between the two types of HSV is a slight difference in DNA,” Wright said. Similarly, HSV-1 will present itself like HSV-2 if it becomes present in the genital region: Blister(s) around the genitals, rectum or mouth.
What does it mean to be positive for HSV-1 and 2?
If your test result is positive, it can mean that you have an active herpes infection without symptoms. It can also mean that you had an HSV infection in the past. The antibody blood test is not as reliable as culturing a sample from a herpes sore.
Is HSV-1 or HSV-2 worse?
HSV-1 can cause “genital herpes,” but most cases of genital herpes are caused by HSV-2. Typically, someone with HSV-2 will have sores around the genitals or rectum. Symptoms are usually the most intense during the first outbreak and become less intense over time.
Can you have both HSV-1 and 2 orally?
Both HSV-1 and HSV-2 are mainly transmissible through anal and vaginal sex. Although HSV-2 can sometimes pass from person to person through oral sex, this is rare.
Do HSV-1 antibodies protect against HSV-2?
Some studies have suggested that prior infection with HSV-1 may provide partial protection against infection with HSV-2 [7–10], whereas others have suggested that prior HSV-1 infection has no effect on acquisition of HSV-2 [11, 12].
