Evidence of the virus is cold, cough, high fever, loss of appetite, etc. There are many other symptoms of this virus. As a normal person, I know this basic, Dr. will know more about this virus.
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Evidence of the virus is cold, cough, high fever, loss of appetite, etc. There are many other symptoms of this virus. As a normal person, I know this basic, Dr. will know more about this virus.
Last year we didn't wear masks.
What's different this year?
Is this the difference between this year' virus and last year' virus?
Then, How did the last year' virus entered the body?