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A virus is a microorganism which causes different diseases. It is characterized by being made up of genetic material inside and being covered by a protein compound. The characteristic of viruses is that they enter the center of the cell and then reproduce within it. The size of the viruses varies between 20 and 500 millimicras.
They exist, around 5000 viruses identified. However, a virus can change (mutate) its genetic material, generating new viruses or viruses that are more resistant than their predecessors. This means that every virus spreads or reproduces in the presence of a cell that it has invaded, so the isolated virus cannot reproduce and can die.
Some virus affect a single species, while others manage to affect several. The severity (degree of mortality) of the virus will be related to the cure (found or not) of the virus. Thus, there are viruses that cannot be considered deadly at present, such as the mumps virus, while others, still without an apparent cure, are considered deadly, such as HIV (AIDS virus).
On the other hand, it is important to clarify that each organism fights the virus by which its cells have been infected. The state of the immune system of the living being affected, will fight the virus. The better the state of the immune system, the more tools it will have to fight (with antibodies) the virus. These antibodies are found in the blood and are called lymphocytes.
- See also: Bacteria.
Examples of viruses
- Adenovirus
- Arbovirus (encephalitis)
- Arenaviridae
- Baculoviridae
- LCM-Lassa viral complexes (Old Continent arenavirus)
- Tacaribe viral complexes (New World arenavirus)
- Cytomegalovirus
- Yellow flavivirus (Yellow fever)
- Flu a
- H1N2, endemic in humans and pigs.
- H2N2, responsible for the Asian flu in 1957.
- H3N2, which caused the Hong Kong flu in 1968.
- H5N1, responsible for the pandemic threat in 2007-08.
- H7N7, which has unusual zoonotic potential33.
- Hantaan (Korean hemorrhagic fever)
- Hepatitis A, B, C
- Herpes simplex (herpes simplex)
- Herpes simplex virus types 1 and 2
- Human herpesvirus 7
- Human herpesvirus 8 (HHV-8)
- Herpesvirus simiae (virus B)
- Varicella-zoster herpesvirus
- Megavirus chilensis
- Myxovirus Mumps (Mumps)
- Other LCM-Lassa Viral Complexes
- Papillomaviridae (Papillomas)
- Papovavirus (human papillomavirus)
- Paramyxoviridae:
- Parotitis (Mumps)
- Parvovirus (Canine Parvovirus)
- Human parvovirus (B 19)
- Picornaviridae
- Poliovirus (Poliomyelitis)
- Poxvirus (contagious molluscum disease virus)
- Rhinovirus
- Rotavirus
- SARS
- Variola virus (Smallpox)
- HIV (Human Immunodeficiency Virus)
- Belgrade virus (or Dobrava)
- Bhanja virus
- BK and JC virus
- Bunyamwera virus
- Coxsackie virus
- Epstein-Barr virus
- Hemorrhagic conjunctivitis virus (AHC)
- Lymphocytic choriomeningitis virus (other strains)
- Lymphocytic choriomeningitis virus (neurotropic strains)
- California encephalitis virus
- Newcastle disease virus
- Influenza (influenza) viruses types A, B, and C
- Hepatitis A virus (human enterovirus type 72)
- Parainfluenza virus types 1 to 4
- Varicella Zoster Virus (Varicella)
- Mumps virus
- Lassa virus
- Measles virus
- Dhori and Thogoto virus
- Echo virus
- Flexal virus
- Germiston virus
- Guanarito virus
- Junin virus
- Human lymphotropic virus B (HBLV-HHV6)
- Machupo virus
- Mopeia virus
- Oropouche virus
- Prospect Hill virus
- Puumala virus
- Respiratory syncytial virus
- Sabia virus
- Seoul virus
- Unnamed virus (formerly Muerto Canyon)
