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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 are the common cold , gastroenteritis and pneumonia .
In January 2016, it was announced that the virus had been discovered in farmed and wild salmon British Columbia for the first time. [14] In Chile, ISA was first isolated from a salmon farm in the 1990s and described for the first time in 2001, [15] although the initial presence never resulted in widespread problems. However, since June 2007 ...
The disease results from virus particles in a single sensory ganglion switching from their latent phase to their active phase. [39] Due to difficulties in studying VZV reactivation directly in humans (leading to reliance on small- animal models ), its latency is less well understood than that of the herpes simplex virus. [ 38 ]
Meet the experts: Richard Watkins, M.D., an infectious disease specialist and a professor of internal medicine at the Northeast Ohio Medical University; William Schaffner, M.D., an infectious ...
Marine invertebrates are susceptible to viral diseases. [60] [61] [62] Sea star wasting disease is a disease of starfish and several other echinoderms that appears sporadically, causing mass mortality of those affected. [63] There are around 40 different species of sea stars that have been affected by this disease.
Young people with polio receiving physiotherapy in the 1950s. The social history of viruses describes the influence of viruses and viral infections on human history. Epidemics caused by viruses began when human behaviour changed during the Neolithic period, around 12,000 years ago, when humans developed more densely populated agricultural communities.
There have been various major infectious diseases with high prevalence worldwide, but they are currently not listed in the above table as epidemics/pandemics due to the lack of definite data, such as time span and death toll. An Ethiopian child with malaria, a disease with an annual death rate of 619,000 as of 2021. [19]
Zazzle is an American online marketplace that allows designers and customers to create their own products with independent manufacturers (clothing, posters, etc.), as well as use images from participating companies. Zazzle has partnered with many brands to amass a collection of digital images from companies like Disney, Warner Brothers and NCAA ...