Webb13 feb. 2024 · Chickenpox (known medically as varicella) is caused by a virus called the varicella-zoster virus. It's spread quickly and easily from someone who is infected. Read more about the causes of chickenpox. … Webb31 mars 2024 · Smallpox is caused by infection with variola major, a virus of the family Poxviridae. A less-virulent form of smallpox, called alastrim, is caused by a closely related virus known as variola minor. There are no natural animal carriers nor natural propagation of variola outside the human body.
Shingles - Symptoms and causes - Mayo Clinic
Webb10 nov. 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 to humanity and caused millions of deaths before it was eradicated. It is believed to have existed for at least 3000 years. The smallpox vaccine, created by Edward Jenner in 1796, … WebbSmallpox was caused by infection with variola virus, which belongs to the family Poxviridae, subfamily Chordopoxvirinae, and genus Orthopoxvirus . Evolution The date of the appearance of smallpox is not settled. It most probably evolved from a terrestrial African rodent virus between 68,000 and 16,000 years ago. [43] shank wheel for skateboard
Plum pox - Wikipedia
WebbChickenpox, a highly contagious illness caused by a primary infection with varicella zoster virus (VZV) Cowpox, a rodent disease that can infect cattle, and also transmissible to humans; used for vaccination against smallpox; Dogpox, an infection of canines; Fowlpox, an infectious disease of poultry; Goatpox, an infectious disease of ... WebbPoxvirus är de största och mest komplexa virusarterna. Generna är uppbyggda av linjärt dubbelsträngat DNA och är försedda med ett hölje. Till skillnad från andra virus med DNA replikerar viruset i cellens cytoplasma vilket innebär att viruset behöver föra med sig olika enzymer t.ex. RNA-polymeras för att möjliggöra ... WebbAbstract. Poxviruses are large, enveloped viruses that replicate in the cytoplasm and encode proteins for DNA replication and gene expression. Hairpin ends link the two strands of the linear, double-stranded DNA genome. Viral proteins involved in DNA synthesis include a 117-kDa polymerase, a helicase–primase, a uracil DNA glycosylase, a ... polymyalgia rheumatica groups