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Smallpox was an infectious disease caused by variola virus (often called smallpox virus), which belongs to the genus Orthopoxvirus.
28 cze 2016 · The virus which causes smallpox is contagious and spreads through person-to- person contact and saliva droplets in an infected person’s breath. It has an incubation period of between 7 and 17 days after exposure and only becomes infectious once the fever develops.
5 sie 2022 · Smallpox is a serious and often deadly viral infection. It's contagious — meaning it spreads from person to person — and can cause permanent scarring. Sometimes, it causes disfigurement. Smallpox has affected humans for thousands of years but was wiped out worldwide by 1980 thanks to smallpox vaccines.
Early symptoms of smallpox include high fever, fatigue and severe back pain, and less often, abdominal pain and vomiting. Two to 3 days later the virus produces a characteristic rash with bumps full of a clear liquid, which later fill with pus and finally develop a crust that dries and falls off.
21 mar 2024 · Smallpox begins with fever, headache, and severe backache. A rash appears after 2-4 days and progresses through characteristic stages of papules, vesicles, pustules, and, finally, scabs. The...
11 paź 2024 · Smallpox is caused by infection with variola major, a virus of the family Poxviridae.
8 sie 2023 · Smallpox is a member of the viral family poxvirus, genus orthopoxvirus, and species variola virus. This disease presents with a non-specific febrile prodrome of high fever, chills, vomiting, abdominal pain, headache, and backache.
