how the corona virus appears to our body cells?
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Answer:
For most people, Covid-19 seems to be pretty mild. And it takes a while—to the tune of five days to two weeks—to cause symptoms, if it does at all.
Unfortunately, that’s exactly what makes the novel coronavirus so dangerous. In the period that an infected person is asymptomatic or mildly ill, they could transmit the virus to dozens of other people through water droplets expelled by coughs or sneezes, transferred on skin and other surfaces. One person in South Korea, known only as patient 31, transmitted the virus to over 1,100 people as she went about her life.
So what is it about this particular virus—SARS-CoV-2—that makes it act this way? Scientists are beginning to understand those stealthy transmission dynamics at a biological level.
All viruses are intracellular parasites. Their only mission in life, if you can call it that, is to use the mechanisms of human cells to make copies of themselves. The tricky task is finding a way into the cells where they can replicate. The novel coronavirus, SARS-CoV-2, isn’t particularly good at that. Research so far suggests that it sneaks in through a single cellular door: a membrane protein called ACE2.
Answer:
it enters in our body through eyes, nose and physical contact with a corona infected person