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Adults 50 and older should get two doses of the shingles vaccine Shingrix. The doses should be separated by two or six months, the CDC says. ... chickenpox virus. Merck has sold a shingles vaccine ...
A zoster vaccine is a vaccine that reduces the incidence of herpes zoster (shingles), a disease caused by reactivation of the varicella zoster virus, which is also responsible for chickenpox. [8] Shingles provokes a painful rash with blisters, and can be followed by chronic pain ( postherpetic neuralgia ), as well as other complications.
Varicella zoster virus is not the same as herpes simplex virus, although they both belong to the alpha subfamily of herpesviruses. [14] Shingles vaccines reduce the risk of shingles by 50 to 90%, depending on the vaccine used. [1] [15] Vaccination also decreases rates of postherpetic neuralgia, and, if shingles occurs, its severity. [1]
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Shingles is caused by varicella zoster virus (VZV), an alpha-herpesvirus. Initial VZV infection usually occurs in childhood causing chickenpox . After this resolves, the virus is not eliminated from the body, but remains latent in the nerve cell bodies of the dorsal root or trigeminal ganglia , without causing symptoms.
Postherpetic neuralgia (PHN) is neuropathic pain that occurs due to damage to a peripheral nerve caused by the reactivation of the varicella zoster virus (herpes zoster, also known as shingles). PHN is defined as pain in a dermatomal distribution that lasts for at least 90 days after an outbreak of herpes zoster. [ 1 ]
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