8 basic biology questions about the coronavirus, explained.
, they lie in that"in-between" space that exists between the dimensions of Matter and Life. By this I mean they behave similarly to both large molecules and full-fledged cells, and yet they also behave significantly different than both. Viruses are molecules that have very primitive and limited metabolic capacities and cannot themselves metabolize energy on their own accord, like cells can.
nCoV-2 is designated as novel because it was not previously identified. That is not to imply that we haven’t encountered Coronaviridae before. In fact, there are varieties of corona virus with which both animals and humans have been acquainted for eons. In humans, corona viruses are known to cause about– most being caused by rhinoviruses. Two other corona viruses are associated with SARS: those which caused the first corona virus-caused SARS and MERS . The current pandemic is caused by nCoV-2.
The disease it causes is called COVID-19, the first cases of which were identified in 2019 – hence CoronaVirusInfectiousDisease-19. The primary source of nCoV-2 is not firmly established but evidence favors a zoonotic origin.At this point a caveat is warranted: when describing or reading about COVID-19, large amounts of both humility and skepticism are warranted.
. Over time, we learned that nCoV-2 induces a wide array of clinical signs and symptoms. At one end, there are patients who harbor the virus, but do not have symptoms and possibly never would develop them. At the other end, we see people with severe pneumonic disease, who developed SARS and did not survive.
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