Researchers have detected novel viruses in samples of glacial ice, suggesting global heating could lead to the re-emergence of historic pathogens. But the science is uncertain.
like these get their name because they are so large, relatively-speaking, they can be easily viewed under a light microscope. While an average virus can be as small as 20 nanometers, a giant virus cannot fit through a hole 200 nanometers or smaller.;"pithos" being the name of a large storage container used by the Ancient Greeks.
This means they cannot die in the typical sense. Virions can either be infectious and ready to"germinate" or inactivated, too damaged to infect or germinate. However, if the conditions are conducive to their"survival," they can remain infectious for extended periods of time.
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