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In biology and immunology, an alphavirus belongs to the group IV Togaviridae family of viruses, according to the system of classification based on viral genome composition introduced by David Baltimore in 1971. Alphaviruses, like all other group IV viruses, have a positive sense, single-stranded RNA genome. There are thirty alphaviruses able to infect various vertebrates such as humans, rodents, fish, birds, and larger mammals such as horses as well as invertebrates. Transmission between species and individuals occurs mainly via mosquitoes making the alphaviruses a contributor to the collection of Arboviruses – or Arthropod-Borne Viruses. Alphavirus particles are enveloped, have a 70 nm diameter, tend to be spherical (although slightly pleomorphic), and have a 40 nm isometric nucleocapsid.

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  • فيروس ألفا
  • Alphavirus
  • Alphavirus
  • Alphavirus
  • Alphavirus
  • Alphavirus
  • Alphavirus
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  • 25بك المحتوى هنا ينقصه الاستشهاد بمصادر. يرجى إيراد مصادر موثوق بها. أي معلومات غير موثقة يمكن التشكيك بها وإزالتها. (مارس 2016) فيروس ألفا (بالإنجليزية: Alphavirus) هي مجموعة من الفيروسات تنمتي إلى الفيروسات الطخائية.
  • Alphavirus (früher: Arbovirus A) ist eine Virus-Gattung der Togaviridae.
  • In biology and immunology, an alphavirus belongs to the group IV Togaviridae family of viruses, according to the system of classification based on viral genome composition introduced by David Baltimore in 1971. Alphaviruses, like all other group IV viruses, have a positive sense, single-stranded RNA genome. There are thirty alphaviruses able to infect various vertebrates such as humans, rodents, fish, birds, and larger mammals such as horses as well as invertebrates. Transmission between species and individuals occurs mainly via mosquitoes making the alphaviruses a contributor to the collection of Arboviruses – or Arthropod-Borne Viruses. Alphavirus particles are enveloped, have a 70 nm diameter, tend to be spherical (although slightly pleomorphic), and have a 40 nm isometric nucleocapsid.
  • Los alfavirus son un grupo de virus ARN monocatenario positivo, se incluyen en la familia togaviridae. Existen numerosas especies de alphavirus que pueden provocar enfermedad en el hombre y otros animales vertebrados, como caballos, roedores, peces y aves. La transmisión ocurre generalmente por picadura de insectos, principalmente mosquitos.
  • Alphavirus (nella letteratura in lingua italiana talora Alfavirus) è un genere di virus ad RNA a singolo filamento positivo appartenente alla famiglia dei Togaviridae, di medie dimensioni, forma rotondeggiante, nucleocapside a simmetria icosaedrica avvolto da membrana lipoproteica, in grado di infettare numerosi vertebrati per mezzo di artropodi. Ubiquitari e distribuiti in sette gruppi sierologici, gli Alphavirus determinano due gruppi di patologie: encefaliti e sindromi febbrili con eruzioni cutanee e poliartriti.
  • Alphavirus é um gênero de vírus RNAss de sentido positivo, esféricos, de 65-70nm, com envelope e responsáveis por diversos tipos de encefalites e síndromes febril com dor articular, como o Chikungunya, transmitidos por mosquitos. Causam doenças tanto em humanos e diversos outros animais.
  • En termes de biologie et d’immunologie, les alphavirus appartiennent au groupe IV des virus et à la famille des togaviridae, selon le système de classification basé sur la composition du génome viral présenté par David Baltimore en 1971. Les Alphavirus, comme tous les autres virus du groupe IV ont un génome constitué d’un seul brin d’ARN à polarité positive. Il existe 27 alphavirus, capables d'infecter divers vertébrés comme les humains, les rongeurs, les oiseaux et les grands mammifères tels que les chevaux ainsi que les invertébrés. La transmission entre individus et entre espèces se fait par l’intermédiaire des moustiques ce qui permet de ranger les alphavirus dans le groupe des arbovirus - ou Arthropodes Virus Borne. Les particules d’Alphavirus sont enveloppée et ont un diamètre de 70
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