Viruses: a natural historyKale, CChoice
Viruses are ubiquitous in natural environments, and their extremely high abundance, diversity, and activity make them indispensable to various Earth’s ecosystems1. Viruses can be generally classified as virulent or temperate; the latter are those viruses that are capable of both lytic and lysogenic ...
Your body does have some natural ability to inhibit viral infections, which is called immunity. There are limited ways the body fights viruses: White blood cells engulf viruses in the blood and "digest" them. Antibodies- blood protein used to provide passive immunity to some diseases...
It has been postulated that protozoan parasites may have a predominantly clonal mode of reproduction in natural populations and that sexual recombination events are rare42, although this theory has been the subject of intense debate for more than 30 years42,43,44. For L. braziliensis, studies usi...
The two human poxviruses infect only humans in nature and other poxviruses are similarly limited in their natural host range. However, a number of mammalian poxviruses whose primary host is not humans can cause natural, albeit usually limited, infections of humans, and still other poxviruses, ...
Since the same fundamental laws of evolutionary change apply across all forms of life, the ecological niche is an essential component of any discussion about virus natural history. Indeed, the seemingly unbounded viral diversity was and is patterned by the existence of manifold selective backgrounds ...
COVID-19 is a reminder of their destructive power, but they’re crucial to humans’ development and survival.
[115]. The lack of a gold standard test, the inability to assess individual risk for infection among different patient populations, and, in particular, ignorance about the natural history of HHV-8 are barriers to proper management. Among the available assays (Table2-12), PCR is most commonly...
Natural history and clinical manifestations of chronic hepatitis B virus. Enfer Infecc Microbiol Clin. 2008;7:11–8. Article Google Scholar Tran TT. Immune tolerant hepatitis B: a clinical dilemma. Gastroenterol Hepatol (N Y). 2011;7(8):511–6. Google Scholar Lamontagne RJ, Bagga S, ...
Moreover, the liver does not appear to be the primary site of replication for GBV-A and GBV-C/HGV. Instead, the lymphoid system seems to be their primary target. The current review deals with what is known of the natural history, virology and molecular biology of these viruses. Key ...