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The human virome in healthy, asymptomatic adults. The histogram shows the number of individuals (y-axis) who were positive for a given number of different viral genera (x-axis). [16] The diversity of human viruses is vast and continually expanding. As of now, there are 219 known species of viruses that can infect humans.
A viral disease (or viral infection) occurs when an organism's body is invaded by pathogenic viruses, and infectious virus particles (virions) attach to and enter susceptible cells. [ 1 ] Examples include the common cold , gastroenteritis , COVID-19 , the flu , and rabies .
The common cold is the most common human disease [21] and affects people all over the globe. [40] Adults typically have two to three infections annually, [8] and children may have six to ten colds a year (and up to twelve colds a year for school children). [13] Rates of symptomatic infections increase in the elderly due to declining immunity. [41]
RSV is respiratory syncytial (sin-SISH-uhl) virus, usually causes mild, cold-like symptoms, according to the federal Centers for Disease Control, and most people recover within a week or two.
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Typical treatment of severe disease first involves treatment with amphotericin B, followed by oral itraconazole. No Ancylostoma duodenale and Necator americanus: Hookworm infection Under research [18] Human bocavirus (HBoV) Human bocavirus infection No Ehrlichia ewingii: Human ewingii ehrlichiosis: The diagnosis can be confirmed by using PCR. A ...
A virus closely related to HTLV-I, human T-lymphotropic virus 2 (HTLV-II) shares approximately 70% genomic homology (structural similarity) with HTLV-I. It was discovered by Robert Gallo and colleagues. [1] [2] HTLV-2 is prevalent in Africa and among Indigenous peoples in Central and South America, as well as among drug users in Europe and ...
Approximately 90% of the human population has been infected with cytomegalovirus by the time they reach adulthood, but most are unaware of the infection. [38] Once a person becomes infected with cytomegalovirus, the virus stays in their body throughout the person's lifetime. During this latent phase, the virus can be detected only in monocytes ...