WebSmallpox gets its name from its most common sign of the disease: small blisters that pop up on the face, arms, and body, and fill up with pus. Other symptoms include: Flu -like … WebJul 20, 1998 · smallpox, also called variola major, acute infectious disease that begins with a high fever, headache, and back pain and then proceeds to an eruption on the skin that leaves the face and limbs covered with cratered pockmarks, or pox. For centuries … immunization, process by which resistance to disease is acquired or induced in pl… vaccine, suspension of weakened, killed, or fragmented microorganisms or toxins … pandemic, outbreak of infectious disease that occurs over a wide geographical ar… cowpox, also called vaccinia, uncommon mildly eruptive disease of animals, first … Wellcome Library, London (CC BY 4.0) Once one of the world’s most dreaded plag…
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WebThere are four types of variola major smallpox: ordinary (the most frequent); modified (mild and occurring in previously vaccinated persons); flat; and hemorrhagic. Historically, … Smallpox was an infectious disease caused by variola virus (often called smallpox virus) which belongs to the genus Orthopoxvirus. The last naturally occurring case was diagnosed in October 1977, and the World Health Organization (WHO) certified the global eradication of the disease in 1980, making smallpox the only human disease to be eradicated. The initial symptoms of the disease included fever and vomiting. This was followed by formation … ctw memoranda
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WebThe smallpox vaccine protects people from smallpox by helping their bodies develop immunity to smallpox. The vaccine is made from a virus called vaccinia, which is a poxvirus similar to smallpox, but less harmful. The smallpox vaccine contains live vaccinia virus, not a killed or weakened virus like many other vaccines. WebNov 10, 2024 · Smallpox is an acute contagious disease caused by the variola virus, a member of the orthopoxvirus family. It was one of the most devastating diseases known … WebFeb 27, 2024 · The variola virus caused smallpox. This virus is a member of the orthopoxvirus family, which also includes cowpox and monkeypox. Historians believe that … easiest way to learn chemistry