what is the difference between type 1 and type 2 hsv?
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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. Both HSV-1 and HSV-2 infections are lifelong.
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There are two types of herpes virus: HSV-1. This virus is spread through contact with infected saliva and cold sores. HSV-1 can cause genital herpes.
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Genital herpes is caused by the herpes simplex virus (HSV). There are two types of herpes viruses — HSV-1 and HSV-2. Genital herpes is usually caused by HSV-2; oral herpes (cold sores) is usually caused by HSV-1. However, genital herpes can also be caused by HSV-1.
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Type 1: always burns, never tans - often has red or strawberry blonde hair, freckles and blue/green or pale-coloured eyes. Type 2: usually burns and tans minimally - usually has fair skin and hair, and pale eyes.
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Herpes simplex viruses -- more commonly known as herpes -- are categorized into two types: herpes type 1 (HSV-1, or oral herpes) and herpes type 2 (HSV-2, or genital herpes). Most commonly, herpes type 1 causes sores around the mouth and lips (sometimes called fever blisters or cold sores).
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So cold sores are only caused by HSV-1? Both HSV-1 and HSV-2 can cause cold sores on the mouth and face. Although it's more common for HSV-1 to cause cold sores, it isn't impossible for HSV-2 to cause them, too.
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There's a common misconception that certain people are “immune” to herpes that stems from the fact that not everyone infected with HSV-1 or HSV-2 will have visible symptoms. However, let us be clear: You cannot be immune to herpes.
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People who already have HSV-1 infection are not at risk of getting it again, but they are still at risk of acquiring herpes simplex virus type 2 (HSV-2) genital infection (see below).
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How long can herpes go undetected? Once you've contracted HSV, there will be an incubation period — the time it takes from contracting the virus until the first symptom appears. The incubation period for HSV-1 and HSV-2 is the same: 2 to 12 days.
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Summary. HIV-1 and HIV-2 are the two main types of the HIV virus. Most people living with HIV have HIV-1. Both types of HIV weaken the immune system, but HIV-2 tends develop more slowly and is less easy for people to transmit than HIV-1.
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A negative (normal) test most often means you have not been infected with HSV-1 or HSV-2. If the infection occurred very recently (within a few weeks to 3 months), the test may be negative, but you may still be infected.
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HSV-1 and HSV-2 infection puts newborns at high risk for developing severe and life-threatening symptoms, including: Fatal organ damage, including the liver, lungs, and heart. Serious viral infections, such as viral meningitis. Recurrent sores on the skin, eyes, genitals, or mouth.
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It is rare to get the same type of herpes on two different areas of the body. This means that if you have HSV-1 on the mouth, you should not get HSV-1 on the genitals. When you are exposed to herpes, your body starts to form antibodies that will protect you if you are exposed to this type of herpes again.
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Genital HSV‐1, which almost always causes a true primary infection, is likely to be more severe during the initial episode. However, genital HSV‐1 causes fewer recurrences (few or none after the first year of infection) and is shed asymptomatically infrequently.
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Genital herpes, caused by the herpes simplex virus type 2 (HSV-2), is one of the most common sexually transmitted infections worldwide. It is also associated with a 2- to 3-fold increased risk for HIV infection. Some people infected with HSV-2 suffer from recurring sores and breaks in genital skin.
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What are HSV-1 and HSV-2? The herpes simplex virus (HSV) is a double-stranded DNA virus with an enveloped, icosahedral capsid. It is a common cause of infections of the skin and mucous membranes, manifesting itself as tiny, clear, fluid-filled blisters usually around the mouth or genitals.
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Cold sores are caused by infection with specific strains of HSV. HSV-1 is the strain that most commonly causes cold sores. However, HSV-2, the strain that causes genital herpes, can also cause cold sores. HSV is very contagious.