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Chickenpox, also known as varicella (/ ˌ v ɛ r ə ˈ s ɛ l ə / VER-ə-SEL-ə), is a highly contagious disease caused by varicella zoster virus (VZV), a member of the herpesvirus family. [3] [7] [5] The disease results in a characteristic skin rash that forms small, itchy blisters, which eventually scab over. [1] It usually starts on the ...
Varicella zoster virus (VZV), also known as human herpesvirus 3 (HHV-3, HHV3), is one of nine known herpes viruses that can infect humans.It causes chickenpox (varicella) commonly affecting children and young adults, and shingles (herpes zoster) in adults but rarely in children.
Varicella vaccine, also known as chickenpox vaccine, is a vaccine that protects against chickenpox. [9] One dose of vaccine prevents 95% of moderate disease and 100% of severe disease. [ 10 ] Two doses of vaccine are more effective than one. [ 10 ]
The vaccinia virus is an effective tool for foreign protein expression, as it elicits a strong host immune-response. The vaccinia virus enters cells primarily by cell fusion, although currently the receptor responsible is unknown. [citation needed] Vaccinia contains three classes of genes: early, intermediate and late.
In the case of chickenpox, also called varicella, the initial infection with the virus typically occurs during childhood or adolescence. [1] Once the chickenpox has resolved, the virus can remain dormant (inactive) in human nerve cells ( dorsal root ganglia or cranial nerves ) [ 11 ] for years or decades, after which it may reactivate and ...
Buffalopox, a disease of buffaloes; Camelpox, a disease of camels; Canarypox, a disease of wild and captive birds; Chickenpox, a highly contagious illness caused by a primary infection with varicella zoster virus (VZV) Cowpox, a rodent disease that can infect cattle, and is also transmissible to humans; used for vaccination against smallpox
Viral infections that may cause it include chickenpox, Coxsackie disease (also called hand-foot-and-mouth disease), Epstein–Barr virus (a common human virus that belongs to the herpes family), influenza, [2] HIV, [3] and SARS-CoV-2 [4] [5] (the virus that causes COVID-19).
The varicella vaccine is 85% effective at preventing varicella (chickenpox) infection. [9] However, 75% of individuals that are diagnosed with breakthrough varicella exhibit milder symptoms than individuals that are not vaccinated. [5] These individuals with mild varicella have low fevers, fewer than 50 lesions on their skin, and a ...