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Prevention of Varicella and Zoster by vaccination: Now you see it, now you don't

Published on July 31, 2018   55 min

A selection of talks on Neurology

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I'm Doctor Anne Gershon at Columbia University College of Physicians and Surgeons in New York, and my talk is entitled, Prevention of Varicella and Zoster by Vaccination: Now You See It and Now You Don't. Varicella zoster virus causes two diseases, varicella and zoster.
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After varicella, the virus becomes latent in the body in neurons and stays with the individual forever after that. If there's failed immune control towards the virus then reactivation of the virus can occur, resulting in a unilateral form of rash that is called zoster or herpes zoster, and it's when the virus reactivates in a neuron, and that's why the rash is usually unilateral. We believe this happens in about 30 percent of individuals during their lifetime; and particularly it occurs in immuno-compromised patients and in the elderly. The incidence of zoster is about 15 percent in the elderly who go on to get postherpetic neuralgia. If they get zoster, they have a 15 percent chance of getting postherpetic neuralgia, which is a very severe form of pain that goes on sometimes for a long time. That's one of the main reasons that we want to have a good vaccination against herpes zoster. The complications are shown in the little boxes and you can see that there are complications that occur both in varicella and in zoster. Generally speaking varicella is a mild disease in healthy children, but in immuno-compromised children they can be very severe. Zoster in the sense causes more severe complications than varicella. Today we recognize that some of these complications can also occur without the rash of zoster. In other words, the virus reactivates but doesn't cause any signs on the skin and we'll talk about that more in detail as we go along. Now the rash of varicella and also zoster is typically

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Prevention of Varicella and Zoster by vaccination: Now you see it, now you don't

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