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A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. [1] Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. [2] [3] Viruses are found in almost every ecosystem on Earth and are the most numerous type of biological entity.
The history of virology – the scientific study of viruses and the infections they cause – began in the closing years of the 19th century. Although Edward Jenner and Louis Pasteur developed the first vaccines to protect against viral infections, they did not know that viruses existed. The first evidence of the existence of viruses came from ...
Herpes simplex virus 1 and 2 ( HSV-1 and HSV-2 ), also known by their taxonomic names Human alphaherpesvirus 1 and Human alphaherpesvirus 2, are two members of the human Herpesviridae family, a set of viruses that produce viral infections in the majority of humans. [ 1][ 2] Both HSV-1 and HSV-2 are very common and contagious.
This is a list of all virus species, including satellites and viroids. Excluded are other ranks, and other non-cellular life such as prions. Also excluded are common names and obsolete names for viruses. The taxonomy is taken from ICTV taxonomy 2022 release [1] For a list of virus families and subfamilies, see List of virus families and ...
A computer virus[ 1] is a type of malware that, when executed, replicates itself by modifying other computer programs and inserting its own code into those programs. [ 2][ 3] If this replication succeeds, the affected areas are then said to be "infected" with a computer virus, a metaphor derived from biological viruses.
This timeline of computer viruses and wormspresents a chronological timeline of noteworthy computer viruses, computer worms, Trojan horses, similar malware, related research and events. 1960s. [edit] John von Neumann's article on the "Theory of self-reproducing automata" is published in 1966.[1] The article is based on lectures given by von ...
Pandoravirus yedoma [4] Pandoravirus is a genus of giant virus, first discovered in 2013. [5] It is the third largest in physical size of any known viral genus, behind Pithovirus and Megaklothovirus. [6] Pandoraviruses have double stranded DNA genomes, with the largest genome size (2.5 million base pairs) of any known viral genus.
Picornavirus. Picornaviruses are a group of related nonenveloped RNA viruses which infect vertebrates including fish, [2] mammals, and birds. They are viruses that represent a large family of small, positive-sense, single-stranded RNA viruses with a 30 nm icosahedral capsid.