BIOLOGICAL CLASSIFICATION
VIRUSES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It is host specific
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It can affect many different groups of animals because it attacks common receptors in the nerve cells
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It is found everywhere
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It can be dormant for years and then pop up in adult hood and cause a new epidemic.
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Detailed explanation-1: -Most adults worldwide are infected with VZV, which stays dormant after chickenpox has cleared, but can reactivate later in life-in about 30% of people-as shingles, which causes both a painful rash and the potential for more serious complications including debilitating pain, blindness or a stroke.
Detailed explanation-2: -It is rare to have chickenpox more than once, as infection gives life-long immunity. Once you have had chickenpox the virus lies dormant (inactive) in the nerves of the spinal cord and can reactivate later in life, this is known as shingles. You cannot catch shingles from another person.
Detailed explanation-3: -After chickenpox, the virus remains in the body (dormant). People get shingles when VZV reactivates in their bodies after they have already had chickenpox. People with shingles can spread VZV to people who have never had chickenpox or never received the chickenpox vaccine.
Detailed explanation-4: -But once infection occurs, the varicella-zoster virus, or VZV, remains dormant in the nervous system, awaiting a signal that causes this “sleeper” virus to be re-activated in the form of an extremely unpleasant but common disease: herpes zoster, or shingles.