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Conficker, also known as Downup, Downadup and Kido, is a computer worm targeting the Microsoft Windows operating system that was first detected in November 2008. [2] It uses flaws in Windows OS software (MS08-067 / CVE-2008-4250) [3] [4] and dictionary attacks on administrator passwords to propagate while forming a botnet, and has been unusually difficult to counter because of its combined use ...
March 26: The Melissa worm was released, targeting Microsoft Word and Outlook -based systems, and creating considerable network traffic. June 6: The ExploreZip worm, which destroys Microsoft Office documents, was first detected. September: the CTX virus is isolated.
Megavirus was isolated from a water sample collected in April 2010 off the coast of Chile, near the marine station in Las Cruces, by Jean-Michel Claverie and Chantal Abergel from the Structural & Genomic Information laboratory (IGS, CNRS and Aix-Marseille University).
Pithovirus—the largest known virus; Parvovirus—smallest known viruses; Pelagibacter ubique—possesses one of the smallest bacterial genomes; Virophage—a virus that requires the host cell to be co-infected with a giant virus; The Giant Virus Finder is a software tool that identifies giant viruses in environmental Metagenomes.
COVID-19 pandemic. SARS-CoV-2, the causative agent of COVID-19, was first introduced to humans through zoonosis (transmission of a pathogen to a human from an animal), and a zoonotic spillover event is the origin of COVID-19 that is considered most plausible by the scientific community. [a] Human coronaviruses including SARS-CoV-2 are zoonotic ...
Filamentous phage virion--schematic views. Filamentous bacteriophages are among the simplest living organisms known, with far fewer genes than the classical tailed bacteriophages studied by the phage group in the mid-20th century. The family contains 29 defined species, divided among 23 genera. [ 6][ 7] However, mining of genomic and ...
Virus classification. Virus classification is the process of naming viruses and placing them into a taxonomic system similar to the classification systems used for cellular organisms . Viruses are classified by phenotypic characteristics, such as genderlogy, nucleic acid type, mode of replication, host organisms, and the type of disease they cause.
Influenza virus life cycle. Entry. Replication. Latency. Shedding. Viruses are only able to replicate themselves by commandeering the reproductive apparatus of cells and making them reproduce the virus's genetic structure and particles instead. How viruses do this depends mainly on the type of nucleic acid DNA or RNA they contain, which is ...