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In the cytoplasm, the satellite virus hijacks the morphogenesis machinery of its helper virus to produce its progeny. Virophages are small, double-stranded DNA viral phages that require the co-infection of another virus. The co-infecting viruses are typically giant viruses. Virophages rely on the viral replication factory of the co-infecting ...
A viral infection does not always cause disease. A viral infection simply involves viral replication in the host, but disease is the damage caused by viral multiplication. [5] An individual who has a viral infection but does not display disease symptoms is known as a carrier. [17] Mechanisms by which viruses cause damage and disease to host cells
Norovirus infections occur more commonly during winter months. [6] It often occurs in outbreaks, especially among those living in close quarters. [3] In the United States, it is the cause of about half of all foodborne disease outbreaks. [3] The virus is named after the city of Norwalk, Ohio, US, where an outbreak occurred in 1968. [10]
Structural model at atomic resolution of bacteriophage T4 [1] The structure of a typical myovirus bacteriophage Anatomy and infection cycle of bacteriophage T4.. A bacteriophage (/ b æ k ˈ t ɪər i oʊ f eɪ dʒ /), also known informally as a phage (/ ˈ f eɪ dʒ /), is a virus that infects and replicates within bacteria and archaea.
Assembled major coat protein subunits in Ff (fd, f1, M13) filamentous bacteriophage (genus Inovirus), exploded view. 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.
Justman says that as of December, RSV activity in the U.S. “is elevated and continues to rise, with infections increasing in several states — especially in the Southeast, and particularly in ...
Parvo Infection. This virus causes bloody diarrhea and vomiting and is often fatal without hospitalization. It can be difficult in the first days to tell it apart from coccidia and other internal ...
Viruses like Sputnik that depend on co-infection of the host cell by helper viruses are known as satellite viruses. At its discovery in a Paris water-cooling tower in 2008, Sputnik was the first known satellite virus that inhibited replication of its helper virus and thus acted as a parasite of that virus. In analogy, it was called a virophage. [2]